diff --git a/src/Core/Core.pro b/src/Core/Core.pro
index 56a6688e..d8ce220e 100644
--- a/src/Core/Core.pro
+++ b/src/Core/Core.pro
@@ -251,7 +251,8 @@ HEADERS += \
     Resource/StringTable/ELanguage.h \
     Tweaks/CTweakManager.h \
     Tweaks/CTweakData.h \
-    Tweaks/CTweakLoader.h
+    Tweaks/CTweakLoader.h \
+    Tweaks/CTweakCooker.h
 
 # Source Files
 SOURCES += \
@@ -365,7 +366,8 @@ SOURCES += \
     Resource/Script/NGameList.cpp \
     Resource/StringTable/CStringTable.cpp \
     Tweaks/CTweakManager.cpp \
-    Tweaks/CTweakLoader.cpp
+    Tweaks/CTweakLoader.cpp \
+    Tweaks/CTweakCooker.cpp
 
 # Codegen
 CODEGEN_DIR = $$EXTERNALS_DIR/CodeGen
diff --git a/src/Core/GameProject/CResourceEntry.cpp b/src/Core/GameProject/CResourceEntry.cpp
index 22e5ef65..9aeec781 100644
--- a/src/Core/GameProject/CResourceEntry.cpp
+++ b/src/Core/GameProject/CResourceEntry.cpp
@@ -321,15 +321,15 @@ bool CResourceEntry::Save(bool SkipCacheSave /*= false*/)
     if (!SkipCacheSave)
     {
         mpStore->ConditionalSaveStore();
+    }
 
-        // Flag dirty any packages that contain this resource.
-        for (uint32 iPkg = 0; iPkg < mpStore->Project()->NumPackages(); iPkg++)
-        {
-            CPackage *pPkg = mpStore->Project()->PackageByIndex(iPkg);
+    // Flag dirty any packages that contain this resource.
+    for (uint32 iPkg = 0; iPkg < mpStore->Project()->NumPackages(); iPkg++)
+    {
+        CPackage *pPkg = mpStore->Project()->PackageByIndex(iPkg);
 
-            if (pPkg->ContainsAsset(ID()))
-                pPkg->MarkDirty();
-        }
+        if (pPkg->ContainsAsset(ID()))
+            pPkg->MarkDirty();
     }
 
     if (ShouldCollectGarbage)
diff --git a/src/Core/Resource/Cooker/CResourceCooker.h b/src/Core/Resource/Cooker/CResourceCooker.h
index b9c03f82..4620b07c 100644
--- a/src/Core/Resource/Cooker/CResourceCooker.h
+++ b/src/Core/Resource/Cooker/CResourceCooker.h
@@ -6,6 +6,8 @@
 #include "CPoiToWorldCooker.h"
 #include "CWorldCooker.h"
 
+#include "Core/Tweaks/CTweakCooker.h"
+
 #include "Core/GameProject/CResourceEntry.h"
 
 class CResourceCooker
@@ -23,6 +25,7 @@ public:
         case EResourceType::Area:                 return CAreaCooker::CookMREA((CGameArea*) pRes, rOutput);
         case EResourceType::Model:                return CModelCooker::CookCMDL((CModel*) pRes, rOutput);
         case EResourceType::StaticGeometryMap:    return CPoiToWorldCooker::CookEGMC((CPoiToWorld*) pRes, rOutput);
+        case EResourceType::Tweaks:               return CTweakCooker::CookCTWK((CTweakData*) pRes, rOutput);
         case EResourceType::World:                return CWorldCooker::CookMLVL((CWorld*) pRes, rOutput);
 
         default:
diff --git a/src/Core/Resource/Cooker/CScriptCooker.cpp b/src/Core/Resource/Cooker/CScriptCooker.cpp
index 46445905..96c38f81 100644
--- a/src/Core/Resource/Cooker/CScriptCooker.cpp
+++ b/src/Core/Resource/Cooker/CScriptCooker.cpp
@@ -5,10 +5,9 @@
 #include <Core/Resource/Script/Property/CEnumProperty.h>
 #include <Core/Resource/Script/Property/CFlagsProperty.h>
 
-void CScriptCooker::WriteProperty(IOutputStream& rOut, IProperty* pProperty, bool InAtomicStruct)
+void CScriptCooker::WriteProperty(IOutputStream& rOut, IProperty* pProperty, void* pData, bool InAtomicStruct)
 {
     uint32 SizeOffset = 0, PropStart = 0;
-    void* pData = (mpArrayItemData ? mpArrayItemData : mpObject->PropertyData());
 
     if (mGame >= EGame::EchoesDemo && !InAtomicStruct)
     {
@@ -197,7 +196,7 @@ void CScriptCooker::WriteProperty(IOutputStream& rOut, IProperty* pProperty, boo
         }
 
         for (uint32 PropertyIdx = 0; PropertyIdx < PropertiesToWrite.size(); PropertyIdx++)
-            WriteProperty(rOut, PropertiesToWrite[PropertyIdx], pStruct->IsAtomic());
+            WriteProperty(rOut, PropertiesToWrite[PropertyIdx], pData, pStruct->IsAtomic());
 
         break;
     }
@@ -208,15 +207,11 @@ void CScriptCooker::WriteProperty(IOutputStream& rOut, IProperty* pProperty, boo
         uint32 Count = pArray->ArrayCount(pData);
         rOut.WriteLong(Count);
 
-        void* pOldItemData = mpArrayItemData;
-
         for (uint32 ElementIdx = 0; ElementIdx < pArray->ArrayCount(pData); ElementIdx++)
         {
-            mpArrayItemData = pArray->ItemPointer(pData, ElementIdx);
-            WriteProperty(rOut, pArray->ItemArchetype(), true);
+            WriteProperty(rOut, pArray->ItemArchetype(), pArray->ItemPointer(pData, ElementIdx), true);
         }
 
-        mpArrayItemData = pOldItemData;
         break;
     }
 
@@ -231,7 +226,6 @@ void CScriptCooker::WriteProperty(IOutputStream& rOut, IProperty* pProperty, boo
     }
 }
 
-// ************ PUBLIC ************
 void CScriptCooker::WriteInstance(IOutputStream& rOut, CScriptObject *pInstance)
 {
     ASSERT(pInstance->Area()->Game() == mGame);
@@ -261,8 +255,7 @@ void CScriptCooker::WriteInstance(IOutputStream& rOut, CScriptObject *pInstance)
         rOut.WriteLong(pLink->ReceiverID());
     }
 
-    mpObject = pInstance;
-    WriteProperty(rOut, pInstance->Template()->Properties(), false);
+    WriteProperty(rOut, pInstance->Template()->Properties(), pInstance->PropertyData(), false);
     uint32 InstanceEnd = rOut.Tell();
 
     rOut.Seek(SizeOffset, SEEK_SET);
diff --git a/src/Core/Resource/Cooker/CScriptCooker.h b/src/Core/Resource/Cooker/CScriptCooker.h
index 50ba2a2c..5db5206c 100644
--- a/src/Core/Resource/Cooker/CScriptCooker.h
+++ b/src/Core/Resource/Cooker/CScriptCooker.h
@@ -10,21 +10,16 @@
 class CScriptCooker
 {
     EGame mGame;
-    CScriptObject* mpObject;
-    void* mpArrayItemData;
     std::vector<CScriptObject*> mGeneratedObjects;
     bool mWriteGeneratedSeparately;
 
-    void WriteProperty(IOutputStream& rOut, IProperty* pProperty, bool InAtomicStruct);
-
 public:
     CScriptCooker(EGame Game, bool WriteGeneratedObjectsSeparately = true)
         : mGame(Game)
-        , mpObject(nullptr)
-        , mpArrayItemData(nullptr)
         , mWriteGeneratedSeparately(WriteGeneratedObjectsSeparately && mGame >= EGame::EchoesDemo)
     {}
 
+    void WriteProperty(IOutputStream& rOut, IProperty* pProperty, void* pData, bool InAtomicStruct);
     void WriteInstance(IOutputStream& rOut, CScriptObject *pInstance);
     void WriteLayer(IOutputStream& rOut, CScriptLayer *pLayer);
     void WriteGeneratedLayer(IOutputStream& rOut);
diff --git a/src/Core/Tweaks/CTweakCooker.cpp b/src/Core/Tweaks/CTweakCooker.cpp
new file mode 100644
index 00000000..177197ec
--- /dev/null
+++ b/src/Core/Tweaks/CTweakCooker.cpp
@@ -0,0 +1,17 @@
+#include "CTweakCooker.h"
+#include "Core/Resource/Cooker/CScriptCooker.h"
+
+/** Cooker entry point */
+bool CTweakCooker::CookCTWK(CTweakData* pTweakData, IOutputStream& CTWK)
+{
+    CStructRef TweakProperties = pTweakData->TweakData();
+    CScriptCooker ScriptCooker(pTweakData->Game());
+    ScriptCooker.WriteProperty(CTWK, TweakProperties.Property(), TweakProperties.DataPointer(), true);
+    return true;
+}
+
+bool CTweakCooker::CookNTWK(const std::vector<CTweakData*>& kTweaks, IOutputStream& NTWK)
+{
+    // Unimplemented
+    return false;
+}
diff --git a/src/Core/Tweaks/CTweakCooker.h b/src/Core/Tweaks/CTweakCooker.h
new file mode 100644
index 00000000..06232f19
--- /dev/null
+++ b/src/Core/Tweaks/CTweakCooker.h
@@ -0,0 +1,18 @@
+#ifndef CTWEAKCOOKER_H
+#define CTWEAKCOOKER_H
+
+#include "CTweakData.h"
+
+/** Class responsible for cooking tweak data */
+class CTweakCooker
+{
+    /** Private constructor */
+    CTweakCooker() {}
+
+public:
+    /** Cooker entry point */
+    static bool CookCTWK(CTweakData* pTweakData, IOutputStream& CTWK);
+    static bool CookNTWK(const std::vector<CTweakData*>& kTweaks, IOutputStream& NTWK);
+};
+
+#endif // CTWEAKCOOKER_H
diff --git a/src/Editor/CTweakEditor.cpp b/src/Editor/CTweakEditor.cpp
index eb189a12..ed82afd8 100644
--- a/src/Editor/CTweakEditor.cpp
+++ b/src/Editor/CTweakEditor.cpp
@@ -15,6 +15,8 @@ CTweakEditor::CTweakEditor(QWidget* pParent)
     SET_WINDOWTITLE_APPVARS("%APP_FULL_NAME% - Tweak Editor[*]");
 
     connect(mpUI->TweakTabs, SIGNAL(currentChanged(int)), this, SLOT(OnTweakTabClicked(int)));
+    connect(mpUI->ActionSave, SIGNAL(triggered(bool)), this, SLOT(Save()));
+    connect(mpUI->ActionSaveAndRepack, SIGNAL(triggered(bool)), this, SLOT(SaveAndRepack()));
 }
 
 CTweakEditor::~CTweakEditor()
@@ -27,6 +29,31 @@ bool CTweakEditor::HasTweaks()
     return !mTweakAssets.isEmpty();
 }
 
+bool CTweakEditor::Save()
+{
+    bool SavedAll = true;
+
+    foreach (CTweakData* pData, mTweakAssets)
+    {
+        if (!pData->Entry()->Save())
+        {
+            SavedAll = false;
+        }
+    }
+
+    if (!SavedAll)
+    {
+        UICommon::ErrorMsg(this, "Tweaks failed to save!");
+        return false;
+    }
+    else
+    {
+        UndoStack().setClean();
+        setWindowModified(false);
+        return true;
+    }
+}
+
 void CTweakEditor::showEvent(QShowEvent* pEvent)
 {
     // Perform first-time UI initialization
diff --git a/src/Editor/CTweakEditor.h b/src/Editor/CTweakEditor.h
index c1fe2556..72f135ed 100644
--- a/src/Editor/CTweakEditor.h
+++ b/src/Editor/CTweakEditor.h
@@ -28,6 +28,7 @@ public:
     ~CTweakEditor();
     bool HasTweaks();
 
+    virtual bool Save() override;
     virtual void showEvent(QShowEvent* pEvent) override;
 
 public slots:
diff --git a/src/Editor/IEditor.h b/src/Editor/IEditor.h
index 2195a764..0f96c055 100644
--- a/src/Editor/IEditor.h
+++ b/src/Editor/IEditor.h
@@ -38,7 +38,7 @@ public slots:
     {
         // Default implementation for editor windows that do not support resaving assets.
         // This should not be called.
-        warnf("Base IEditor::Save() implementation called. Changes will not be saved.");
+        errorf("Base IEditor::Save() implementation called. Changes will not be saved.");
         return true;
     }