diff --git a/DataSpec/DNACommon/ParticleCommon.hpp b/DataSpec/DNACommon/ParticleCommon.hpp
index e5842c69f..138a3a257 100644
--- a/DataSpec/DNACommon/ParticleCommon.hpp
+++ b/DataSpec/DNACommon/ParticleCommon.hpp
@@ -626,12 +626,15 @@ struct VEConstant : IVectorElement
 
     void read(athena::io::YAMLDocReader& r)
     {
-        for (int i=0 ; i<3 ; ++i)
+        size_t elemCount;
+        r.enterSubVector(nullptr, elemCount);
+        for (int i=0 ; i<3 && i<elemCount ; ++i)
         {
             r.enterSubRecord(nullptr);
             comps[i].read(r);
             r.leaveSubRecord();
         }
+        r.leaveSubVector();
     }
     void write(athena::io::YAMLDocWriter& w) const
     {
diff --git a/DataSpec/DNAMP1/STRG.hpp b/DataSpec/DNAMP1/STRG.hpp
index b45dc61b2..50f2bc5e2 100644
--- a/DataSpec/DNAMP1/STRG.hpp
+++ b/DataSpec/DNAMP1/STRG.hpp
@@ -79,6 +79,13 @@ struct STRG : ISTRG
         return true;
     }
 
+    static bool Cook(const STRG& strg, const hecl::ProjectPath& outPath)
+    {
+        athena::io::FileWriter ws(outPath.getAbsolutePath());
+        strg.write(ws);
+        return true;
+    }
+
 };
 
 }
diff --git a/DataSpec/SpecBase.cpp b/DataSpec/SpecBase.cpp
index ccc0a41b2..cb6145873 100644
--- a/DataSpec/SpecBase.cpp
+++ b/DataSpec/SpecBase.cpp
@@ -33,8 +33,8 @@ static const hecl::SystemChar* MomErr[] =
 };
 
 constexpr uint32_t MomErrCount = std::extent<decltype(MomErr)>::value;
-SpecBase::SpecBase(hecl::Database::Project& project, bool pc)
-: m_project(project), m_pc(pc),
+SpecBase::SpecBase(const hecl::Database::DataSpecEntry* specEntry, hecl::Database::Project& project, bool pc)
+: hecl::Database::IDataSpec(specEntry), m_project(project), m_pc(pc),
   m_masterShader(project.getProjectWorkingPath(), ".hecl/RetroMasterShader.blend") {}
 
 bool SpecBase::canExtract(const ExtractPassInfo& info, std::vector<ExtractReport>& reps)
@@ -114,13 +114,13 @@ void SpecBase::doExtract(const ExtractPassInfo& info, FProgress progress)
     extractFromDisc(*m_disc, info.force, progress);
 }
 
-bool SpecBase::canCook(const hecl::ProjectPath& path)
+bool SpecBase::canCook(const hecl::ProjectPath& path, hecl::BlenderToken& btok)
 {
     if (!checkPathPrefix(path))
         return false;
     if (hecl::IsPathBlend(path))
     {
-        hecl::BlenderConnection& conn = hecl::BlenderConnection::SharedConnection();
+        hecl::BlenderConnection& conn = btok.getBlenderConnection();
         if (!conn.openBlend(path))
             return false;
         if (conn.getBlendType() != hecl::BlenderConnection::BlendType::None)
@@ -141,13 +141,14 @@ bool SpecBase::canCook(const hecl::ProjectPath& path)
 }
 
 const hecl::Database::DataSpecEntry* SpecBase::overrideDataSpec(const hecl::ProjectPath& path,
-                                                                const hecl::Database::DataSpecEntry* oldEntry)
+                                                                const hecl::Database::DataSpecEntry* oldEntry,
+                                                                hecl::BlenderToken& btok)
 {
     if (!checkPathPrefix(path))
         return nullptr;
     if (hecl::IsPathBlend(path))
     {
-        hecl::BlenderConnection& conn = hecl::BlenderConnection::SharedConnection();
+        hecl::BlenderConnection& conn = btok.getBlenderConnection();
         if (!conn.openBlend(path))
         {
             Log.report(logvisor::Error, _S("unable to cook '%s'"),
@@ -167,12 +168,12 @@ const hecl::Database::DataSpecEntry* SpecBase::overrideDataSpec(const hecl::Proj
 }
 
 void SpecBase::doCook(const hecl::ProjectPath& path, const hecl::ProjectPath& cookedPath,
-                      bool fast, FCookProgress progress)
+                      bool fast, hecl::BlenderToken& btok, FCookProgress progress)
 {
     DataSpec::g_curSpec = this;
     if (hecl::IsPathBlend(path))
     {
-        hecl::BlenderConnection& conn = hecl::BlenderConnection::SharedConnection();
+        hecl::BlenderConnection& conn = btok.getBlenderConnection();
         if (!conn.openBlend(path))
             return;
         switch (conn.getBlendType())
@@ -209,6 +210,7 @@ void SpecBase::doCook(const hecl::ProjectPath& path, const hecl::ProjectPath& co
     {
         FILE* fp = hecl::Fopen(path.getAbsolutePath().c_str(), _S("r"));
         cookYAML(cookedPath, path, fp, progress);
+        fclose(fp);
     }
 }
 
diff --git a/DataSpec/SpecBase.hpp b/DataSpec/SpecBase.hpp
index 11cb8e5c1..52136c254 100644
--- a/DataSpec/SpecBase.hpp
+++ b/DataSpec/SpecBase.hpp
@@ -16,11 +16,12 @@ struct SpecBase : hecl::Database::IDataSpec
     bool canExtract(const ExtractPassInfo& info, std::vector<ExtractReport>& reps);
     void doExtract(const ExtractPassInfo& info, FProgress progress);
 
-    bool canCook(const hecl::ProjectPath& path);
+    bool canCook(const hecl::ProjectPath& path, hecl::BlenderToken& btok);
     const hecl::Database::DataSpecEntry* overrideDataSpec(const hecl::ProjectPath& path,
-                                                          const hecl::Database::DataSpecEntry* oldEntry);
+                                                          const hecl::Database::DataSpecEntry* oldEntry,
+                                                          hecl::BlenderToken& btok);
     void doCook(const hecl::ProjectPath& path, const hecl::ProjectPath& cookedPath,
-                bool fast, FCookProgress progress);
+                bool fast, hecl::BlenderToken& btok, FCookProgress progress);
 
     bool canPackage(const PackagePassInfo& info);
     void gatherDependencies(const PackagePassInfo& info,
@@ -72,7 +73,7 @@ struct SpecBase : hecl::Database::IDataSpec
     /* Project accessor */
     hecl::Database::Project& getProject() const {return m_project;}
 
-    SpecBase(hecl::Database::Project& project, bool pc);
+    SpecBase(const hecl::Database::DataSpecEntry* specEntry, hecl::Database::Project& project, bool pc);
 protected:
     hecl::Database::Project& m_project;
     bool m_pc;
diff --git a/DataSpec/SpecMP1.cpp b/DataSpec/SpecMP1.cpp
index d8b07df44..a1d787ad3 100644
--- a/DataSpec/SpecMP1.cpp
+++ b/DataSpec/SpecMP1.cpp
@@ -9,6 +9,7 @@
 #include "DNAMP1/STRG.hpp"
 #include "DNAMP1/CMDL.hpp"
 #include "DNAMP1/ANCS.hpp"
+#include "DNACommon/PART.hpp"
 
 namespace DataSpec
 {
@@ -33,8 +34,8 @@ struct SpecMP1 : SpecBase
     hecl::ProjectPath m_cookPath;
     PAKRouter<DNAMP1::PAKBridge> m_pakRouter;
 
-    SpecMP1(hecl::Database::Project& project, bool pc)
-    : SpecBase(project, pc),
+    SpecMP1(const hecl::Database::DataSpecEntry* specEntry, hecl::Database::Project& project, bool pc)
+    : SpecBase(specEntry, project, pc),
       m_workPath(project.getProjectWorkingPath(), _S("MP1")),
       m_cookPath(project.getProjectCookedPath(SpecEntMP1), _S("MP1")),
       m_pakRouter(*this, m_workPath, m_cookPath) {}
@@ -286,11 +287,18 @@ struct SpecMP1 : SpecBase
 
     bool validateYAMLDNAType(FILE* fp) const
     {
-        if (BigYAML::ValidateFromYAMLFile<DNAMP1::MLVL>(fp))
-            return true;
-        if (BigYAML::ValidateFromYAMLFile<DNAMP1::STRG>(fp))
-            return true;
-        return false;
+        athena::io::YAMLDocReader reader;
+        yaml_parser_set_input_file(reader.getParser(), fp);
+        return reader.ClassTypeOperation([](const char* classType)
+        {
+            if (!strcmp(classType, DNAMP1::MLVL::DNAType()))
+                return true;
+            else if (!strcmp(classType, DNAMP1::STRG::DNAType()))
+                return true;
+            else if (!strcmp(classType, DNAParticle::GPSM<UniqueID32>::DNAType()))
+                return true;
+            return false;
+        });
     }
 
     void cookMesh(const hecl::ProjectPath& out, const hecl::ProjectPath& in,
@@ -319,6 +327,27 @@ struct SpecMP1 : SpecBase
     void cookYAML(const hecl::ProjectPath& out, const hecl::ProjectPath& in,
                   FILE* fin, FCookProgress progress) const
     {
+        athena::io::YAMLDocReader reader;
+        yaml_parser_set_input_file(reader.getParser(), fin);
+        if (reader.parse())
+        {
+            std::string classStr = reader.readString("DNAType");
+            if (classStr.empty())
+                return;
+
+            if (!classStr.compare(DNAMP1::STRG::DNAType()))
+            {
+                DNAMP1::STRG strg;
+                strg.read(reader);
+                DNAMP1::STRG::Cook(strg, out);
+            }
+            else if (!classStr.compare(DNAParticle::GPSM<UniqueID32>::DNAType()))
+            {
+                DNAParticle::GPSM<UniqueID32> gpsm;
+                gpsm.read(reader);
+                DNAParticle::WriteGPSM(gpsm, out);
+            }
+        }
     }
 };
 
@@ -327,7 +356,7 @@ hecl::Database::DataSpecEntry SpecEntMP1 =
     _S("MP1"),
     _S("Data specification for original Metroid Prime engine"),
     [](hecl::Database::Project& project, hecl::Database::DataSpecTool)
-    -> hecl::Database::IDataSpec* {return new struct SpecMP1(project, false);}
+    -> hecl::Database::IDataSpec* {return new struct SpecMP1(&SpecEntMP1, project, false);}
 };
 
 hecl::Database::DataSpecEntry SpecEntMP1PC =
@@ -338,7 +367,7 @@ hecl::Database::DataSpecEntry SpecEntMP1PC =
     -> hecl::Database::IDataSpec*
     {
         if (tool != hecl::Database::DataSpecTool::Extract)
-            return new struct SpecMP1(project, true);
+            return new struct SpecMP1(&SpecEntMP1PC, project, true);
         return nullptr;
     }
 };
diff --git a/DataSpec/SpecMP2.cpp b/DataSpec/SpecMP2.cpp
index 0c28220aa..9b3836ff5 100644
--- a/DataSpec/SpecMP2.cpp
+++ b/DataSpec/SpecMP2.cpp
@@ -29,8 +29,8 @@ struct SpecMP2 : SpecBase
     hecl::ProjectPath m_cookPath;
     PAKRouter<DNAMP2::PAKBridge> m_pakRouter;
 
-    SpecMP2(hecl::Database::Project& project, bool pc)
-    : SpecBase(project, pc),
+    SpecMP2(const hecl::Database::DataSpecEntry* specEntry, hecl::Database::Project& project, bool pc)
+    : SpecBase(specEntry, project, pc),
       m_workPath(project.getProjectWorkingPath(), _S("MP2")),
       m_cookPath(project.getProjectCookedPath(SpecEntMP2), _S("MP2")),
       m_pakRouter(*this, m_workPath, m_cookPath) {}
@@ -307,7 +307,7 @@ hecl::Database::DataSpecEntry SpecEntMP2
     _S("MP2"),
     _S("Data specification for original Metroid Prime 2 engine"),
     [](hecl::Database::Project& project, hecl::Database::DataSpecTool)
-    -> hecl::Database::IDataSpec* {return new struct SpecMP2(project, false);}
+    -> hecl::Database::IDataSpec* {return new struct SpecMP2(&SpecEntMP2, project, false);}
 );
 
 hecl::Database::DataSpecEntry SpecEntMP2PC =
@@ -318,7 +318,7 @@ hecl::Database::DataSpecEntry SpecEntMP2PC =
     -> hecl::Database::IDataSpec*
     {
         if (tool != hecl::Database::DataSpecTool::Extract)
-            return new struct SpecMP2(project, true);
+            return new struct SpecMP2(&SpecEntMP2PC, project, true);
         return nullptr;
     }
 };
diff --git a/DataSpec/SpecMP3.cpp b/DataSpec/SpecMP3.cpp
index 02f318d17..c2c5b4a48 100644
--- a/DataSpec/SpecMP3.cpp
+++ b/DataSpec/SpecMP3.cpp
@@ -42,8 +42,8 @@ struct SpecMP3 : SpecBase
     hecl::ProjectPath m_feCookPath;
     PAKRouter<DNAMP3::PAKBridge> m_fePakRouter;
 
-    SpecMP3(hecl::Database::Project& project, bool pc)
-    : SpecBase(project, pc),
+    SpecMP3(const hecl::Database::DataSpecEntry* specEntry, hecl::Database::Project& project, bool pc)
+    : SpecBase(specEntry, project, pc),
       m_workPath(project.getProjectWorkingPath(), _S("MP3")),
       m_cookPath(project.getProjectCookedPath(SpecEntMP3), _S("MP3")),
       m_pakRouter(*this, m_workPath, m_cookPath),
@@ -491,7 +491,7 @@ hecl::Database::DataSpecEntry SpecEntMP3
     _S("MP3"),
     _S("Data specification for original Metroid Prime 3 engine"),
     [](hecl::Database::Project& project, hecl::Database::DataSpecTool)
-    -> hecl::Database::IDataSpec* {return new struct SpecMP3(project, false);}
+    -> hecl::Database::IDataSpec* {return new struct SpecMP3(&SpecEntMP3, project, false);}
 );
 
 hecl::Database::DataSpecEntry SpecEntMP3PC =
@@ -502,7 +502,7 @@ hecl::Database::DataSpecEntry SpecEntMP3PC =
     -> hecl::Database::IDataSpec*
     {
         if (tool != hecl::Database::DataSpecTool::Extract)
-            return new struct SpecMP3(project, true);
+            return new struct SpecMP3(&SpecEntMP3PC, project, true);
         return nullptr;
     }
 };
diff --git a/Editor/ProjectResourceFactoryBase.cpp b/Editor/ProjectResourceFactoryBase.cpp
index 93573bdd4..5fc6988b9 100644
--- a/Editor/ProjectResourceFactoryBase.cpp
+++ b/Editor/ProjectResourceFactoryBase.cpp
@@ -20,7 +20,8 @@ hecl::BlenderConnection& ProjectResourceFactoryBase::GetBackgroundBlender() cons
     return *shareConn;
 }
 
-void ProjectResourceFactoryBase::ReadCatalog(const hecl::ProjectPath& catalogPath)
+void ProjectResourceFactoryBase::ReadCatalog(const hecl::ProjectPath& catalogPath,
+                                             athena::io::YAMLDocWriter& nameWriter)
 {
     FILE* fp = hecl::Fopen(catalogPath.getAbsolutePath().c_str(), _S("r"));
     if (!fp)
@@ -44,6 +45,10 @@ void ProjectResourceFactoryBase::ReadCatalog(const hecl::ProjectPath& catalogPat
         {
             std::unique_lock<std::mutex> lk(m_backgroundIndexMutex);
             m_catalogNameToTag[p.first] = pathTag;
+
+            char idStr[9];
+            snprintf(idStr, 9, "%08X", uint32_t(pathTag.id));
+            nameWriter.writeString(p.first.c_str(), idStr);
 #if 0
             fprintf(stderr, "%s %s %08X\n",
                     p.first.c_str(),
@@ -53,7 +58,43 @@ void ProjectResourceFactoryBase::ReadCatalog(const hecl::ProjectPath& catalogPat
     }
 }
 
-void ProjectResourceFactoryBase::BackgroundIndexRecursiveProc(const hecl::ProjectPath& dir, int level)
+void ProjectResourceFactoryBase::BackgroundIndexRecursiveCatalogs(const hecl::ProjectPath& dir,
+                                                                  athena::io::YAMLDocWriter& nameWriter,
+                                                                  int level)
+{
+    hecl::DirectoryEnumerator dEnum(dir.getAbsolutePath(),
+                                    hecl::DirectoryEnumerator::Mode::DirsThenFilesSorted,
+                                    false, false, true);
+
+    /* Enumerate all items */
+    for (const hecl::DirectoryEnumerator::Entry& ent : dEnum)
+    {
+        hecl::ProjectPath path(dir, ent.m_name);
+        if (ent.m_isDir && level < 1)
+            BackgroundIndexRecursiveCatalogs(path, nameWriter, level+1);
+        else
+        {
+            if (path.getPathType() != hecl::ProjectPath::Type::File)
+                continue;
+
+            /* Read catalog.yaml for .pak directory if exists */
+            if (level == 1 && !ent.m_name.compare(_S("catalog.yaml")))
+            {
+                ReadCatalog(path, nameWriter);
+                continue;
+            }
+        }
+
+        /* bail if cancelled by client */
+        if (!m_backgroundRunning)
+            break;
+    }
+}
+
+void ProjectResourceFactoryBase::BackgroundIndexRecursiveProc(const hecl::ProjectPath& dir,
+                                                              athena::io::YAMLDocWriter& cacheWriter,
+                                                              athena::io::YAMLDocWriter& nameWriter,
+                                                              int level)
 {
     hecl::DirectoryEnumerator dEnum(dir.getAbsolutePath(),
                                     hecl::DirectoryEnumerator::Mode::DirsThenFilesSorted,
@@ -64,7 +105,7 @@ void ProjectResourceFactoryBase::BackgroundIndexRecursiveProc(const hecl::Projec
     {
         hecl::ProjectPath path(dir, ent.m_name);
         if (ent.m_isDir)
-            BackgroundIndexRecursiveProc(path, level+1);
+            BackgroundIndexRecursiveProc(path, cacheWriter, nameWriter, level+1);
         else
         {
             if (path.getPathType() != hecl::ProjectPath::Type::File)
@@ -73,7 +114,7 @@ void ProjectResourceFactoryBase::BackgroundIndexRecursiveProc(const hecl::Projec
             /* Read catalog.yaml for .pak directory if exists */
             if (level == 1 && !ent.m_name.compare(_S("catalog.yaml")))
             {
-                ReadCatalog(path);
+                ReadCatalog(path, nameWriter);
                 continue;
             }
 
@@ -83,7 +124,13 @@ void ProjectResourceFactoryBase::BackgroundIndexRecursiveProc(const hecl::Projec
             {
                 std::unique_lock<std::mutex> lk(m_backgroundIndexMutex);
                 m_tagToPath[pathTag] = path;
-#if 0
+                char idStr[9];
+                snprintf(idStr, 9, "%08X", uint32_t(pathTag.id));
+                cacheWriter.enterSubVector(idStr);
+                cacheWriter.writeString(nullptr, pathTag.type.toString().c_str());
+                cacheWriter.writeString(nullptr, path.getRelativePathUTF8().c_str());
+                cacheWriter.leaveSubVector();
+#if 1
                 fprintf(stderr, "%s %08X %s\n",
                         pathTag.type.toString().c_str(), uint32_t(pathTag.id),
                         path.getRelativePathUTF8().c_str());
@@ -99,19 +146,107 @@ void ProjectResourceFactoryBase::BackgroundIndexRecursiveProc(const hecl::Projec
 
 void ProjectResourceFactoryBase::BackgroundIndexProc()
 {
+    hecl::ProjectPath tagCachePath(m_proj->getProjectCookedPath(*m_origSpec), _S("tag_cache.yaml"));
+    hecl::ProjectPath nameCachePath(m_proj->getProjectCookedPath(*m_origSpec), _S("name_cache.yaml"));
     hecl::ProjectPath specRoot(m_proj->getProjectWorkingPath(), m_origSpec->m_name);
-    BackgroundIndexRecursiveProc(specRoot, 0);
+
+    /* Read in tag cache */
+    if (tagCachePath.getPathType() == hecl::ProjectPath::Type::File)
+    {
+        FILE* cacheFile = hecl::Fopen(tagCachePath.getAbsolutePath().c_str(), _S("r"));
+        if (cacheFile)
+        {
+            Log.report(logvisor::Info, _S("Cache index of '%s' loading"), m_origSpec->m_name);
+            athena::io::YAMLDocReader cacheReader;
+            yaml_parser_set_input_file(cacheReader.getParser(), cacheFile);
+            if (cacheReader.parse())
+            {
+                std::unique_lock<std::mutex> lk(m_backgroundIndexMutex);
+                m_tagToPath.reserve(cacheReader.getRootNode()->m_mapChildren.size());
+                for (const auto& child : cacheReader.getRootNode()->m_mapChildren)
+                {
+                    unsigned long id = strtoul(child.first.c_str(), nullptr, 16);
+                    hecl::FourCC type(child.second->m_seqChildren.at(0)->m_scalarString.c_str());
+                    hecl::ProjectPath path(m_proj->getProjectWorkingPath(),
+                        child.second->m_seqChildren.at(1)->m_scalarString);
+                    m_tagToPath[SObjectTag(type, id)] = path;
+                }
+            }
+            fclose(cacheFile);
+            Log.report(logvisor::Info, _S("Cache index of '%s' loaded; %d tags"),
+                       m_origSpec->m_name, m_tagToPath.size());
+
+            if (nameCachePath.getPathType() == hecl::ProjectPath::Type::File)
+            {
+                /* Read in name cache */
+                Log.report(logvisor::Info, _S("Name index of '%s' loading"), m_origSpec->m_name);
+                FILE* nameFile = hecl::Fopen(nameCachePath.getAbsolutePath().c_str(), _S("r"));
+                athena::io::YAMLDocReader nameReader;
+                yaml_parser_set_input_file(nameReader.getParser(), nameFile);
+                if (nameReader.parse())
+                {
+                    std::unique_lock<std::mutex> lk(m_backgroundIndexMutex);
+                    m_catalogNameToTag.reserve(nameReader.getRootNode()->m_mapChildren.size());
+                    for (const auto& child : nameReader.getRootNode()->m_mapChildren)
+                    {
+                        unsigned long id = strtoul(child.second->m_scalarString.c_str(), nullptr, 16);
+                        auto search = m_tagToPath.find(SObjectTag(FourCC(), uint32_t(id)));
+                        if (search != m_tagToPath.cend())
+                            m_catalogNameToTag[child.first] = search->first;
+                    }
+                }
+                fclose(nameFile);
+                Log.report(logvisor::Info, _S("Name index of '%s' loaded; %d names"),
+                           m_origSpec->m_name, m_catalogNameToTag.size());
+            }
+            else
+            {
+                /* Build name cache */
+                Log.report(logvisor::Info, _S("Name index of '%s' started"), m_origSpec->m_name);
+                athena::io::YAMLDocWriter nameWriter(nullptr);
+                BackgroundIndexRecursiveCatalogs(specRoot, nameWriter, 0);
+                FILE* nameFile = hecl::Fopen(nameCachePath.getAbsolutePath().c_str(), _S("w"));
+                yaml_emitter_set_output_file(nameWriter.getEmitter(), nameFile);
+                nameWriter.finish();
+                fclose(nameFile);
+                Log.report(logvisor::Info, _S("Name index of '%s' complete; %d names"),
+                           m_origSpec->m_name, m_catalogNameToTag.size());
+            }
+            m_backgroundRunning = false;
+            return;
+        }
+    }
+
+    Log.report(logvisor::Info, _S("Background index of '%s' started"), m_origSpec->m_name);
+    athena::io::YAMLDocWriter cacheWriter(nullptr);
+    athena::io::YAMLDocWriter nameWriter(nullptr);
+    BackgroundIndexRecursiveProc(specRoot, cacheWriter, nameWriter, 0);
+
+    FILE* cacheFile = hecl::Fopen(tagCachePath.getAbsolutePath().c_str(), _S("w"));
+    yaml_emitter_set_output_file(cacheWriter.getEmitter(), cacheFile);
+    cacheWriter.finish();
+    fclose(cacheFile);
+
+    FILE* nameFile = hecl::Fopen(nameCachePath.getAbsolutePath().c_str(), _S("w"));
+    yaml_emitter_set_output_file(nameWriter.getEmitter(), nameFile);
+    nameWriter.finish();
+    fclose(nameFile);
+
+    if (m_backgroundBlender)
+    {
+        m_backgroundBlender->quitBlender();
+        m_backgroundBlender = std::experimental::nullopt;
+    }
+    Log.report(logvisor::Info, _S("Background index of '%s' complete; %d tags, %d names"),
+               m_origSpec->m_name, m_tagToPath.size(), m_catalogNameToTag.size());
     m_backgroundRunning = false;
-    m_backgroundBlender = std::experimental::nullopt;
 }
 
 void ProjectResourceFactoryBase::CancelBackgroundIndex()
 {
-    if (m_backgroundRunning && m_backgroundIndexTh.joinable())
-    {
-        m_backgroundRunning = false;
+    m_backgroundRunning = false;
+    if (m_backgroundIndexTh.joinable())
         m_backgroundIndexTh.join();
-    }
 }
 
 void ProjectResourceFactoryBase::BeginBackgroundIndex
@@ -135,7 +270,7 @@ hecl::ProjectPath ProjectResourceFactoryBase::GetCookedPath(const hecl::ProjectP
 {
     const hecl::Database::DataSpecEntry* spec = m_origSpec;
     if (pcTarget)
-        spec = m_cookSpec->overrideDataSpec(working, m_pcSpec);
+        spec = m_cookSpec->overrideDataSpec(working, m_pcSpec, hecl::SharedBlenderToken);
     if (!spec)
         return {};
     return working.getCookedPath(*spec);
@@ -143,7 +278,7 @@ hecl::ProjectPath ProjectResourceFactoryBase::GetCookedPath(const hecl::ProjectP
 
 bool ProjectResourceFactoryBase::SyncCook(const hecl::ProjectPath& working)
 {
-    return m_clientProc.syncCook(working) == 0;
+    return m_clientProc.syncCook(working, m_cookSpec.get(), hecl::SharedBlenderToken);
 }
 
 CFactoryFnReturn ProjectResourceFactoryBase::SyncMakeObject(const SObjectTag& tag,
@@ -210,7 +345,7 @@ void ProjectResourceFactoryBase::AsyncTask::EnsurePath(const hecl::ProjectPath&
             m_cookedPath.getModtime() < path.getModtime())
         {
             /* Start a background cook here */
-            m_cookTransaction = m_parent.m_clientProc.addCookTransaction(path);
+            m_cookTransaction = m_parent.m_clientProc.addCookTransaction(path, m_parent.m_cookSpec.get());
             return;
         }
 
@@ -246,7 +381,10 @@ bool ProjectResourceFactoryBase::AsyncTask::AsyncPump()
     if (m_bufTransaction)
     {
         if (m_bufTransaction->m_complete)
+        {
+            m_complete = true;
             return true;
+        }
     }
     else if (m_cookTransaction)
     {
@@ -274,6 +412,8 @@ std::unique_ptr<urde::IObj> ProjectResourceFactoryBase::Build(const urde::SObjec
                 if (search != m_tagToPath.end())
                     break;
             }
+            if (search == m_tagToPath.end())
+                return {};
         }
         else
             return {};
@@ -312,6 +452,8 @@ bool ProjectResourceFactoryBase::CanBuild(const urde::SObjectTag& tag)
                 if (search != m_tagToPath.end())
                     break;
             }
+            if (search == m_tagToPath.end())
+                return false;
         }
         else
             return false;
@@ -339,6 +481,8 @@ const urde::SObjectTag* ProjectResourceFactoryBase::GetResourceIdByName(const ch
                 if (search != m_catalogNameToTag.end())
                     break;
             }
+            if (search == m_catalogNameToTag.end())
+                return nullptr;
         }
         else
             return nullptr;
@@ -363,26 +507,29 @@ void ProjectResourceFactoryBase::AsyncIdle()
 
         /* Ensure requested resource is in the index */
         std::unique_lock<std::mutex> lk(m_backgroundIndexMutex);
-        AsyncTask& data = it->second;
-        auto search = m_tagToPath.find(data.x0_tag);
+        AsyncTask& task = it->second;
+        auto search = m_tagToPath.find(task.x0_tag);
         if (search == m_tagToPath.end())
         {
             if (!m_backgroundRunning)
             {
                 Log.report(logvisor::Error, _S("unable to find async load resource (%s, %08X)"),
-                           data.x0_tag.type.toString().c_str(), data.x0_tag.id);
+                           task.x0_tag.type.toString().c_str(), task.x0_tag.id);
                 it = m_asyncLoadList.erase(it);
             }
             continue;
         }
-        data.EnsurePath(search->second);
+        task.EnsurePath(search->second);
 
         /* Pump load pipeline (cooking if needed) */
-        if (data.AsyncPump())
+        if (task.AsyncPump())
         {
-            /* Load complete, build resource */
-            athena::io::MemoryReader mr(data.x10_loadBuffer.get(), data.x14_resSize);
-            *data.xc_targetPtr = m_factoryMgr.MakeObject(data.x0_tag, mr, data.x18_cvXfer).release();
+            if (task.m_complete)
+            {
+                /* Load complete, build resource */
+                athena::io::MemoryReader mr(task.x10_loadBuffer.get(), task.x14_resSize);
+                *task.xc_targetPtr = m_factoryMgr.MakeObject(task.x0_tag, mr, task.x18_cvXfer).release();
+            }
             it = m_asyncLoadList.erase(it);
             continue;
         }
diff --git a/Editor/ProjectResourceFactoryBase.hpp b/Editor/ProjectResourceFactoryBase.hpp
index ffc1b31c4..a18a748ac 100644
--- a/Editor/ProjectResourceFactoryBase.hpp
+++ b/Editor/ProjectResourceFactoryBase.hpp
@@ -50,6 +50,7 @@ protected:
         const hecl::ClientProcess::CookTransaction* m_cookTransaction = nullptr;
         const hecl::ClientProcess::BufferTransaction* m_bufTransaction = nullptr;
         bool m_failed = false;
+        bool m_complete = false;
 
         AsyncTask(ProjectResourceFactoryBase& parent, const SObjectTag& tag,
                   IObj** ptr, const CVParamTransfer& xfer)
@@ -64,8 +65,15 @@ protected:
     virtual SObjectTag TagFromPath(const hecl::ProjectPath& path) const=0;
 
     hecl::BlenderConnection& GetBackgroundBlender() const;
-    void ReadCatalog(const hecl::ProjectPath& catalogPath);
-    void BackgroundIndexRecursiveProc(const hecl::ProjectPath& path, int level);
+    void ReadCatalog(const hecl::ProjectPath& catalogPath,
+                     athena::io::YAMLDocWriter& nameWriter);
+    void BackgroundIndexRecursiveProc(const hecl::ProjectPath& path,
+                                      athena::io::YAMLDocWriter& cacheWriter,
+                                      athena::io::YAMLDocWriter& nameWriter,
+                                      int level);
+    void BackgroundIndexRecursiveCatalogs(const hecl::ProjectPath& path,
+                                          athena::io::YAMLDocWriter& nameWriter,
+                                          int level);
     void BackgroundIndexProc();
     void CancelBackgroundIndex();
     void BeginBackgroundIndex(hecl::Database::Project& proj,
@@ -87,6 +95,8 @@ public:
 
     void AsyncIdle();
     void Shutdown() {CancelBackgroundIndex();}
+
+    ~ProjectResourceFactoryBase() {Shutdown();}
 };
 
 }
diff --git a/Editor/ViewManager.cpp b/Editor/ViewManager.cpp
index 877b509e9..62c465534 100644
--- a/Editor/ViewManager.cpp
+++ b/Editor/ViewManager.cpp
@@ -21,21 +21,23 @@ namespace urde
 void ViewManager::BuildTestPART(urde::IObjectStore& objStore)
 {
     //m_partGenDesc = objStore.GetObj({hecl::FOURCC('PART'), 0x972A5CD2});
-    /*
     m_partGenDesc = objStore.GetObj("BusterSparks");
     m_partGen.reset(new urde::CElementGen(m_partGenDesc,
                                            urde::CElementGen::EModelOrientationType::Normal,
                                            urde::CElementGen::EOptionalSystemFlags::None));
     m_partGen->SetGlobalScale({5.f, 5.f, 5.f});
     m_lineRenderer.reset(new urde::CLineRenderer(urde::CLineRenderer::EPrimitiveMode::LineStrip, 4, nullptr, true));
-    */
+
     m_particleView.reset(new ParticleView(*this, m_viewResources, *m_rootView));
+
+    /*
     m_moviePlayer.reset(new CMoviePlayer("Video/SpecialEnding.thp", 1.f, false, true));
     m_moviePlayer->SetFrame({-1.0f, 1.0f, 0.f}, {-1.0f, -1.0f, 0.f}, {1.0f, -1.0f, 0.f}, {1.0f, 1.0f, 0.f});
     CDvdFile testRSF("Audio/frontend_1.rsf");
     u64 rsfLen = testRSF.Length();
     m_rsfBuf.reset(new u8[rsfLen]);
     testRSF.SyncRead(m_rsfBuf.get(), rsfLen);
+    */
     //CMoviePlayer::SetStaticAudio(m_rsfBuf.get(), rsfLen, 416480, 1973664);
 
     m_videoVoice = m_voiceEngine->allocateNewStereoVoice(32000, &m_voiceCallback);
diff --git a/Runtime/IFactory.hpp b/Runtime/IFactory.hpp
index 10006a064..bf667a154 100644
--- a/Runtime/IFactory.hpp
+++ b/Runtime/IFactory.hpp
@@ -12,7 +12,7 @@ class IObj;
 class IFactory
 {
 public:
-    virtual ~IFactory() {}
+    virtual ~IFactory() = default;
     virtual std::unique_ptr<IObj> Build(const SObjectTag&, const CVParamTransfer&)=0;
     virtual void BuildAsync(const SObjectTag&, const CVParamTransfer&, IObj**)=0;
     virtual void CancelBuild(const SObjectTag&)=0;
diff --git a/hecl b/hecl
index 0dead9f66..fe207bf42 160000
--- a/hecl
+++ b/hecl
@@ -1 +1 @@
-Subproject commit 0dead9f66e4f5221e22cd2ecfb4ea9857c3a801f
+Subproject commit fe207bf42c08164a83420e8ed82ad7f009972307