Fatal Error due to Cloner in Motion design plugin when running exe after packaging Unreal 5.4 project.

Hello.

I am using Unreal 5.4.2 with the Motion Design plugin. When I run the packaged exe after placing the Cloner Actor in a level, I get a Fatal Error.

I tried to submit an Unreal bug report, but the webpage loads infinitely, so I’m posting my question here.

Here are the steps to reproduce.

  1. Add the motion Design plugin to your Unreal 5.4.2 empty project.
  2. Place a Motion design Cloner Actor in your Level.
  3. Package it for the Windows platform. (Both Debug Game and Development)
  4. run the exe.

When it runs, it should give a Fatal Error and turn off.

Below is the crash log.
CGBTest.log (112.0 KB)

[2024.07.12-02.59.50:990][ 1]LogWindows: Error: === Critical error: ===
[2024.07.12-02.59.50:990][ 1]LogWindows: Error:
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: Fatal error!
[2024.07.12-02.59.50:990][ 1]LogWindows: Error:
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000200000000
[2024.07.12-02.59.50:990][ 1]LogWindows: Error:
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff61d6afea4 CGBTest.exe!SerializeUnversionedProperties()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff61d6aefed CGBTest.exe!UStruct::SerializeTaggedProperties()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff61d6ae3c5 CGBTest.exe!UScriptStruct::SerializeItem()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff61d86f00c CGBTest.exe!UObject::Serialize()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff61d86ed50 CGBTest.exe!UObject::Serialize()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff61da1c5ef CGBTest.exe!StaticDuplicateObjectEx()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff625bff67b CGBTest.exe!UCEClonerLayoutBase::LoadLayout()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff625c0badf CGBTest.exe!UCEClonerComponent::SetClonerActiveLayout()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff625c00a4f CGBTest.exe!ACEClonerActor::OnLayoutNameChanged()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff625c0f8f5 CGBTest.exe!ACEClonerActor::Tick()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff622702c44 CGBTest.exe!AActor::TickActor()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff6226cda3c CGBTest.exe!FActorTickFunction::ExecuteTick()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff623e1735f CGBTest.exe!FTickFunctionTask::DoTask()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff623e36176 CGBTest.exe!TGraphTask::ExecuteTask()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff61cca9cba CGBTest.exe!FNamedTaskThread::ProcessTasksNamedThread()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff61ccaa28e CGBTest.exe!FNamedTaskThread::ProcessTasksUntilQuit()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff61ccb60d3 CGBTest.exe!FTaskGraphCompatibilityImplementation::WaitUntilTasksComplete()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff623e90db5 CGBTest.exe!FTickTaskSequencer::ReleaseTickGroup()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff623e9f772 CGBTest.exe!FTickTaskManager::RunTickGroup()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff6232cdeee CGBTest.exe!UWorld::RunTickGroup()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff6232d8f82 CGBTest.exe!UWorld::Tick()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff62302cd69 CGBTest.exe!UGameEngine::Tick()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff62468d50a CGBTest.exe!FEngineLoop::Tick()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff6246a585c CGBTest.exe!GuardedMain()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff6246a592a CGBTest.exe!GuardedMainWrapper()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff6246a84f5 CGBTest.exe!LaunchWindowsStartup()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff6246b87d4 CGBTest.exe!WinMain()
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff629110a1a CGBTest.exe!__scrt_common_main_seh() [D:\a_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
[2024.07.12-02.59.50:990][ 1]LogWindows: Error: [Callstack] 0x00007ff973217344 KERNEL32.DLL!UnknownFunction
[2024.07.12-02.59.50:990][ 1]LogWindows: Error:
[2024.07.12-02.59.50:992][ 1]LogExit: Executing StaticShutdownAfterError
[2024.07.12-02.59.50:992][ 1]LogWindows: FPlatformMisc::RequestExit(1, LaunchWindowsStartup.ExceptionHandler)
[2024.07.12-02.59.50:992][ 1]LogWindows: FPlatformMisc::RequestExitWithStatus(1, 3, LaunchWindowsStartup.ExceptionHandler)
[2024.07.12-02.59.50:992][ 1]LogCore: Engine exit requested (reason: Win RequestExit)

I need to run the exe with Motion Design Cloner. Or can I modify the C++ code myself before updating the engine, and if so, which parts should I modify? I do all my work in Blueprints, so C++ is new to me. I need help please.

1 Like

Same problem here

Same problem. Very sad :frowning:

I uploaded a video for make it more dramatic