Raskolnikow:
Hi, unfortunately I cant use the most recent version of UE4 since I also want to use Nvidia Flex. I found a workaround for my use case by just cutting the rope at the first segment
[2021.02.21-07.58.35:735][544]LogWindows: Error: === Critical error: ===
[2021.02.21-07.58.35:735][544]LogWindows: Error:
[2021.02.21-07.58.35:735][544]LogWindows: Error: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000100
[2021.02.21-07.58.35:735][544]LogWindows: Error:
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000E9576BC0 UE4Editor-Engine.dll!FBodyInstance::GetPxRigidActor_AssumesLocked() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\engine\classes\physicsengine\bodyinstance.h:627]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000D7E452B6 UE4Editor-VICODynamicsPlugin.dll!FVDCollisionQueryInterface::OverlapSphere() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\plugins\vicodynamicsplugin\source\vicodynamicsplugin\private\vdcollisioninterface.cpp:129]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000D7DF9329 VICODynamics_Profile.dll!UnknownFunction ]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000D7DF9DC6 VICODynamics_Profile.dll!UnknownFunction ]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000D7DFA03F VICODynamics_Profile.dll!UnknownFunction ]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000D7DFA41D VICODynamics_Profile.dll!UnknownFunction ]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000D7E5BFED UE4Editor-VICODynamicsPlugin.dll!UVDSimulation::Tick() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\plugins\vicodynamicsplugin\source\vicodynamicsplugin\private\vdsimulation.cpp:289]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000EA74CFCB UE4Editor-Engine.dll!FTickFunctionTask::DoTask() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\engine\private icktaskmanager.cpp:273]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000EA7526A3 UE4Editor-Engine.dll!TGraphTask<FTickFunctionTask>::ExecuteTask() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\core\public\async askgraphinterfaces.h:829]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000FCF8B713 UE4Editor-Core.dll!FNamedTaskThread::ProcessTasksNamedThread() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\core\private\async askgraph.cpp:665]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000FCF8BD3A UE4Editor-Core.dll!FNamedTaskThread::ProcessTasksUntilQuit() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\core\private\async askgraph.cpp:574]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000FCFAECFE UE4Editor-Core.dll!FTaskGraphImplementation::WaitUntilTasksComplete() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\core\private\async askgraph.cpp:1355]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000EA773681 UE4Editor-Engine.dll!FTickTaskSequencer::ReleaseTickGroup() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\engine\private icktaskmanager.cpp:542]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000EA7791A2 UE4Editor-Engine.dll!FTickTaskManager::RunTickGroup() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\engine\private icktaskmanager.cpp:1449]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000E9FCCB74 UE4Editor-Engine.dll!UWorld::RunTickGroup() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\engine\private\leveltick.cpp:776]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000E9FD8C95 UE4Editor-Engine.dll!UWorld::Tick() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\engine\private\leveltick.cpp:1525]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000E817D821 UE4Editor-UnrealEd.dll!UEditorEngine::Tick() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\editor\unrealed\private\editorengine.cpp:1702]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000E8A19936 UE4Editor-UnrealEd.dll!UUnrealEdEngine::Tick() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\editor\unrealed\private\unrealedengine.cpp:401]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x000000007B2A5EAC UE4Editor.exe!FEngineLoop::Tick() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\launch\private\launchengineloop.cpp:3345]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x000000007B2B6BD0 UE4Editor.exe!GuardedMain() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\launch\private\launch.cpp:166]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x000000007B2B6C4A UE4Editor.exe!GuardedMainWrapper() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\launch\private\windows\launchwindows.cpp:144]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x000000007B2C4187 UE4Editor.exe!WinMain() [m:\git\unrealengine\0lento-pr-flex-4.19.2\engine\source\runtime\launch\private\windows\launchwindows.cpp:223]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x000000007B2C5B97 UE4Editor.exe!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x0000000072247034 .DLL!UnknownFunction ]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000723DD241 ntdll.dll!UnknownFunction ]
[2021.02.21-07.58.35:735][544]LogWindows: Error: [Callstack] 0x00000000723DD241 ntdll.dll!UnknownFunction ]
[2021.02.21-07.58.35:735][544]LogWindows: Error:
[2021.02.21-07.58.35:749][544]LogExit: Executing StaticShutdownAfterError
[2021.02.21-07.58.35:779][544]LogPhysics: Error: PHYSX: ( 0) eINVALID_OPERATION : PxScene::lockWrite() detected after a PxScene::lockRead(), lock upgrading is not supported, behaviour will be undefined.
[2021.02.21-07.58.35:780][544]LogPhysics: Error: PHYSX: (D:\Build\++UE4+Dev-AnimPhys+Engine\Sync\Engine\Source\ThirdParty\PhysX3\PhysX_3.4\Source\PhysX\src\NpScene.cpp 3026) eINVALID_OPERATION : PxScene::unlockWrite() called without matching call to PxScene::lockWrite(), behaviour will be undefined.
[2021.02.21-07.58.35:781][544]LogPhysics: Error: PHYSX: (D:\Build\++UE4+Dev-AnimPhys+Engine\Sync\Engine\Source\ThirdParty\PhysX3\PhysX_3.4\Source\PhysX\src\NpScene.cpp 223) eINVALID_OPERATION : PxScene::lockWrite() detected after a PxScene::lockRead(), lock upgrading is not supported, behaviour will be undefined.
[2021.02.21-07.58.35:781][544]LogPhysics: Error: PHYSX: (D:\Build\++UE4+Dev-AnimPhys+Engine\Sync\Engine\Source\ThirdParty\PhysX3\PhysX_3.4\Source\PhysX\src\NpScene.cpp 3026) eINVALID_OPERATION : PxScene::unlockWrite() called without matching call to PxScene::lockWrite(), behaviour will be undefined.
[2021.02.21-07.58.35:782][544]LogWindows: FPlatformMisc::RequestExit(1)
[2021.02.21-07.58.35:782][544]Log file closed, 02/21/21 08:58:35
I’m afraid that crash looks a lot like a known one that was addressed in a later version. If you’d like, I can see if I can apply the fix to the version you are using.