Game crashing when running Standalone from the editor

Development Programming & Scripting Blueprint
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1

The project runs well on the editor and package build, but it would crash if running on Standalone mode from the editor.
It seems it has something to do with UChildActorComponent, but it still happens after I delete all the actors that has child actor in the scene.

Unreal Version: Version: 4.14.3-3249277+++UE4+Release-4.14

Error message as below:

Access violation - code c0000005 (first/second chance not available)

UE4Editor_CoreUObject!UObjectBaseUtility::GetName() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\public\uobject\uobjectbaseutility.h:346]
UE4Editor_Engine!UChildActorComponent::Serialize() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\engine\private\components\childactorcomponent.cpp:90]
UE4Editor_CoreUObject!FLinkerLoad::Preload() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3414]
UE4Editor_CoreUObject!FLinkerLoad::CreateExportAndPreload() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2890]
UE4Editor_CoreUObject!FLinkerLoad::LoadAllObjects() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3023]
UE4Editor_CoreUObject!LoadPackageInternalInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1271]
UE4Editor_CoreUObject!LoadPackageInternal() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1423]
UE4Editor_CoreUObject!FLinkerLoad::ResolveDeferredDependencies() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:942]
UE4Editor_CoreUObject!FLinkerLoad::ResolveAllImports() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:1181]
UE4Editor_CoreUObject!FLinkerLoad::FinalizeBlueprint() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:1284]
UE4Editor_CoreUObject!FLinkerLoad::FinalizeBlueprint() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:1275]
UE4Editor_CoreUObject!FLinkerLoad::Preload() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3461]
UE4Editor_CoreUObject!FLinkerLoad::CreateExport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:4111]
UE4Editor_CoreUObject!FLinkerLoad::IndexToObject() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:4334]
UE4Editor_CoreUObject!FLinkerLoad::CreateExport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3807]
UE4Editor_CoreUObject!FLinkerLoad::CreateExportAndPreload() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2884]
UE4Editor_CoreUObject!FLinkerLoad::LoadAllObjects() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3023]
UE4Editor_CoreUObject!LoadPackageInternalInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1271]
UE4Editor_CoreUObject!LoadPackageInternal() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1423]

2

I’m not sure about that but it might be because you are using some editor-only blueprint classes (or components). I had a similar issue with my project where some actions would crash standalone play. Turned out I was using an arrow component in my character blueprint that was editor-only, so it wouldn’t be accepted as a valid class when trying to play in standalone or from a packaged build. I just had to replace this specific component with a normal arrow component.

Check if you are using some of these elements in your project and try to replace them with their non-editor counterparts.

3

Thanks for your insight, I’ll check whether that is the case for my situation.
Could you talk a bit more about the editor-only component? like what makes it editor-only?