Crash when using marketplace version for UE5.4

[zompi2]

A marketplace user reported a crash with the following callstack:

UnrealEditor_EnhancedCodeFlow!TMulticastScriptDelegate<FNotThreadSafeDelegateMode>::ProcessMulticastDelegate<UObject>() [D:\RocketSync\5.4.0-33043543+++UE5+Release-5.4\Working\Engine\Source\Runtime\Core\Public\UObject\ScriptDelegates.h:908]

UnrealEditor_EnhancedCodeFlow!UE::Core::Private::Function::TFunctionRefCaller<`UECFTimelineBP::ECFTimeline'::`2'::<lambda_1>,void __cdecl(float,float)>::Call() [D:\RocketSync\5.4.0-33043543+++UE5+Release-5.4\Working\Engine\Source\Runtime\Core\Public\Templates\Function.h:406]

UnrealEditor_EnhancedCodeFlow!UECFTimeline::Tick() [D:\build\U5M-Marketplace\Sync\LocalBuilds\PluginTemp\HostProject\Plugins\EnhancedCodeFlow\Source\EnhancedCodeFlow\Public\CodeFlowActions\ECFTimeline.h:84]

UnrealEditor_EnhancedCodeFlow!UECFSubsystem::Tick() [D:\build\U5M-Marketplace\Sync\LocalBuilds\PluginTemp\HostProject\Plugins\EnhancedCodeFlow\Source\EnhancedCodeFlow\Private\ECFSubsystem.cpp:94]

Possibly the problem with BP proxy not being valid all the time?