Crash: R6025 pure virtual function call in webplayer_win.dll

Unity 4.0 is rather glitchy. Even after the release. I've converted my 3.5 project to 4.0 and it's behaving strangely. It seems like the Unity team has modified the Mono core heavily, cause I've definitely got low level bugs while building for iOS. One of them is weird comparison of enums (variable, containing one value equals to completely different constant), another is a strange call to .ToString() method when it shouldn't (as if it has got wrong value from the vtable).

So the best option is to AVOID UNITY 4.0 COMPLETELY as it is not ready for production yet (shame on Unity's QA or Management). Right now I'm converting my project back to 3.5 - requires a bit of manual work.

Another good thing is to file a bug report via Unity Bug Reporter app (it's bundled together with the Unity app) and to attach your project to help the devs pinpoint the bug quickly.

P.S. There are rumors that Unity's support is not very helpful and responsive when it goes to such bugs :)

Do you have collision detection enabled on any particles systems? I had this same crash and it seemed to be coming from there

We get this crash on the PC in the editor and not in the editor. It has appeared since we updated to 4.x. We would be glad to work directly with the Unity team on reproducing this.

-------------- More --------------------- I greatly reduced this bug by fixing a mistake in our code. Don't do this..

class Foo { public static Dictionary allFoos = new Dictionary();

 public int uid;

 public Foo( int uid )
 {
     this.uid = uid;
     allFoo[uid] = this;
 }

 ~Foo()
 {
     // DANGER - Because this Foo is in the list it will never get garbage collected
     // so this never gets called and so garbage builds up forever.
     
     allFoo.Remove(uid);
 }

}

Our code has a static method to remove world objects and because the destructor never got called only partial cleanup was done. This later confused Unity GameObject and caused the culling algorithm to really get trashed. Instead all WorldObject subclasses have a virtual preDelete() method to do cleanup and list removal.

-------------- More ---------------------

I used Visual Studio to attach to the crashed game. The stack shows it died in scene culling, which I believe is completely new code in Unity 4.x

the stack is... ( Greater than and less than symbols changed to GT and LT so HTML is not trashed . )

Not Flagged        21856    0    Main Thread    Main Thread    Unity.exe!__crtMessageBoxW    Normal
                              [External Code]     
                              [Frames below may be incorrect and/or missing, no symbols loaded for user32.dll]     
                              Unity.exe!__crtMessageBoxW(const wchar_t * lpText, const wchar_t * lpCaption, unsigned int uType) Line 97     
                              GameOverlayRenderer.dll!223918e9()     
                              GameOverlayRenderer.dll!223918e9()     
                              Unity.exe!__crtMessageBoxW(const wchar_t * lpText, const wchar_t * lpCaption, unsigned int uType) Line 158     
                              Unity.exe!_NMSG_WRITE(int rterrnum) Line 290     
                              Unity.exe!_purecall() Line 56     
                              Unity.exe!CullAllPerObjectLights(const CullingDynamicArrayLTVisibleNodeGT & visibleNodes, const ActiveLights & lights, const int renderPath, CullingDynamicArray & forwardLightIndices, CullingDynamicArray LT unsigned int GT & forwardLightOffsets) Line 132     
                              Unity.exe!CullLights(const SceneCullingParameters & cullingParameters, CullResults & results) Line 178     
                              Unity.exe!CullScene(SceneCullingParameters & cullingParameters, CullResults & results) Line 233     
                              Unity.exe!Camera::CustomCull(const CameraCullingParameters & parameters, CullResults & results) Line 993     
                              Unity.exe!Camera::Cull(CullResults & results) Line 801     
                              Unity.exe!RenderManager::RenderCameras() Line 89     
                              Unity.exe!RenderGameViewCameras(const RectTLTfloatGT & guiRect, bool gizmos, bool gui) Line 178     
                              Unity.exe!EditorGUIUtility_CUSTOM_INTERNAL_CALL_RenderGameViewCameras(const RectTLTfloatGT & cameraRect, short gizmos, short gui) Line 224     
                              [External Code]     
                              mono.dll!mono_jit_runtime_invoke(_MonoMethod * method, void * obj, void * * params, MonoObject * * exc) Line 4889     
                              mono.dll!mono_runtime_invoke(_MonoMethod * method, void * obj, void * * params, MonoObject * * exc) Line 2618     
                              mono.dll!mono_runtime_invoke_array(_MonoMethod * method, void * obj, MonoArray * params, MonoObject * * exc) Line 3822     
                              mono.dll!ves_icall_InternalInvoke(_MonoReflectionMethod * method, MonoObject * this, MonoArray * params, _MonoException * * exc) Line 2856     
                              [External Code]     
                              mono.dll!mono_jit_runtime_invoke(_MonoMethod * method, void * obj, void * * params, MonoObject * * exc) Line 4889     
                              mono.dll!mono_runtime_invoke(_MonoMethod * method, void * obj, void * * params, MonoObject * * exc) Line 2618     
                              Unity.exe!scripting_method_invoke(ScriptingMethod * method, MonoObject * object, ScriptingArguments & arguments, MonoException * * exception) Line 183     
                              Unity.exe!ScriptingInvocationNoArgs::Invoke(MonoException * * exception) Line 97     
                              Unity.exe!MonoBehaviour::DoGUI(MonoBehaviour::GUILayoutType layoutType, int skin) Line 401     
                              Unity.exe!GUIView::OnInputEvent(InputEvent & event) Line 1962     
                              Unity.exe!GUIView::DoPaint() Line 1198     
                              Unity.exe!GUIView::RepaintAll(bool performAutorepaint) Line 2233     
                              Unity.exe!Application::UpdateScene(bool doRepaint) Line 2337     
                              Unity.exe!Application::UpdateSceneIfNeeded() Line 2216     
                              Unity.exe!Application::TickTimer() Line 1319     
                              Unity.exe!MainMessageLoop() Line 336     
                              Unity.exe!WinMain(HINSTANCE__ * hInst, HINSTANCE__ * hPrev, char * szCmdLine, int nCmdShow) Line 848     
                              Unity.exe!__tmainCRTStartup() Line 275     
                              [External Code]