diff --git a/DataSpec/SpecBase.cpp b/DataSpec/SpecBase.cpp
index 8316d111e..d0c4cf8d2 100644
--- a/DataSpec/SpecBase.cpp
+++ b/DataSpec/SpecBase.cpp
@@ -792,6 +792,11 @@ void SpecBase::doPackage(const hecl::ProjectPath& path, const hecl::Database::Da
     pakOut.close();
 }
 
+void SpecBase::interruptCook()
+{
+    cancelBackgroundIndex();
+}
+
 hecl::ProjectPath SpecBase::getCookedPath(const hecl::ProjectPath& working, bool pcTarget) const
 {
     const hecl::Database::DataSpecEntry* spec = &getOriginalSpec();
@@ -1269,6 +1274,10 @@ void SpecBase::backgroundIndexRecursiveProc(const hecl::ProjectPath& dir,
     /* Enumerate all items */
     for (const hecl::DirectoryEnumerator::Entry& ent : dEnum)
     {
+        /* bail if cancelled by client */
+        if (!m_backgroundRunning)
+            break;
+
         hecl::ProjectPath path(dir, ent.m_name);
         if (ent.m_isDir)
             backgroundIndexRecursiveProc(path, cacheWriter, nameWriter, level + 1);
@@ -1287,10 +1296,6 @@ void SpecBase::backgroundIndexRecursiveProc(const hecl::ProjectPath& dir,
             /* Index the regular file */
             addFileToIndex(path, cacheWriter);
         }
-
-        /* bail if cancelled by client */
-        if (!m_backgroundRunning)
-            break;
     }
 }
 
@@ -1323,6 +1328,9 @@ void SpecBase::backgroundIndexProc()
                 size_t loadIdx = 0;
                 for (const auto& child : cacheReader.getRootNode()->m_mapChildren)
                 {
+                    if (!m_backgroundRunning)
+                        return;
+
                     const athena::io::YAMLNode& node = *child.second;
                     unsigned long id = strtoul(child.first.c_str(), nullptr, 16);
                     hecl::FourCC type(node.m_seqChildren.at(0)->m_scalarString.c_str());
diff --git a/DataSpec/SpecBase.hpp b/DataSpec/SpecBase.hpp
index b0e304b0b..fb26a5a31 100644
--- a/DataSpec/SpecBase.hpp
+++ b/DataSpec/SpecBase.hpp
@@ -53,6 +53,8 @@ struct SpecBase : hecl::Database::IDataSpec
                    bool fast, hecl::blender::Token& btok, const hecl::MultiProgressPrinter& progress,
                    hecl::ClientProcess* cp);
 
+    void interruptCook();
+
     /* Extract handlers */
     virtual bool checkStandaloneID(const char* id) const=0;
     virtual bool checkFromStandaloneDisc(nod::DiscBase& disc,
diff --git a/DataSpec/SpecMP1.cpp b/DataSpec/SpecMP1.cpp
index 40fc7153f..69128f326 100644
--- a/DataSpec/SpecMP1.cpp
+++ b/DataSpec/SpecMP1.cpp
@@ -1313,7 +1313,7 @@ struct SpecMP1 : SpecBase
             auto layerIt = area.depLayers.cbegin();
             while (it != area.deps.cend())
             {
-                if (layerIt != area.depLayers.cend() && it - area.deps.cbegin() == *layerIt)
+                while (layerIt != area.depLayers.cend() && it - area.deps.cbegin() == *layerIt)
                 {
                     strippedDepLayers.push_back(atUint32(strippedDeps.size()));
                     ++layerIt;
diff --git a/Runtime/MP1/MP1.cpp b/Runtime/MP1/MP1.cpp
index 30ac73f0e..455d72626 100644
--- a/Runtime/MP1/MP1.cpp
+++ b/Runtime/MP1/MP1.cpp
@@ -363,6 +363,7 @@ void CGameGlobalObjects::AddPaksAndFactories()
         fmgr->AddFactory(FOURCC('MAPA'), FFactoryFunc(FMapAreaFactory));
         fmgr->AddFactory(FOURCC('MAPU'), FFactoryFunc(FMapUniverseFactory));
         fmgr->AddFactory(FOURCC('AFSM'), FFactoryFunc(FAiFiniteStateMachineFactory));
+        fmgr->AddFactory(FOURCC('PATH'), FMemFactoryFunc(FPathFindAreaFactory));
     }
 }
 
diff --git a/Runtime/World/CGameArea.cpp b/Runtime/World/CGameArea.cpp
index 937501d9c..ca72252b9 100644
--- a/Runtime/World/CGameArea.cpp
+++ b/Runtime/World/CGameArea.cpp
@@ -1313,22 +1313,19 @@ void CGameArea::VerifyTokenList(CStateManager& stateMgr)
     if (xac_deps2.empty())
         return;
 
-    u32 lastOff = 0;
-    int lidx = 0;
-    for (u32 off : xbc_layerDepOffsets)
+    auto end = xac_deps2.end();
+    for (int lidx = int(xbc_layerDepOffsets.size() - 1) ; lidx >= 0 ; --lidx)
     {
+        auto begin = xac_deps2.begin() + xbc_layerDepOffsets[lidx];
         if (stateMgr.LayerState()->IsLayerActive(x4_selfIdx, lidx))
         {
-            auto it = xac_deps2.begin() + lastOff;
-            auto end = xac_deps2.begin() + off;
-            for (; it != end ; ++it)
+            for (auto it = begin ; it != end ; ++it)
             {
                 xdc_tokens.push_back(g_SimplePool->GetObj(*it));
                 xdc_tokens.back().Lock();
             }
         }
-        lastOff = off;
-        ++lidx;
+        end = begin;
     }
 }
 
diff --git a/Runtime/World/CPathFindArea.cpp b/Runtime/World/CPathFindArea.cpp
index 9d071d011..4d82ef78b 100644
--- a/Runtime/World/CPathFindArea.cpp
+++ b/Runtime/World/CPathFindArea.cpp
@@ -5,6 +5,8 @@
 namespace urde
 {
 
+static logvisor::Module Log("CPathFindArea");
+
 CPFAreaOctree::CPFAreaOctree(CMemoryInStream& in)
 {
     x0_isLeaf = in.readUint32Big();
@@ -137,6 +139,10 @@ CPFArea::CPFArea(std::unique_ptr<u8[]>&& buf, u32 len)
 {
     CMemoryInStream r(buf.get(), len);
 
+    u32 version = r.readUint32Big();
+    if (version != 4)
+        Log.report(logvisor::Fatal, "Unexpected PATH version %d, should be 4", version);
+
     u32 numNodes = r.readUint32Big();
     x140_nodes.reserve(numNodes);
     for (u32 i=0 ; i<numNodes ; ++i)
diff --git a/hecl b/hecl
index 4ae0a6175..fab000e10 160000
--- a/hecl
+++ b/hecl
@@ -1 +1 @@
-Subproject commit 4ae0a61756a33f650ac4094ecc314ab24cf2f22f
+Subproject commit fab000e10c85c813628b14ed539e5220e902a6ae