UE4 4.14.3 Crashes on open. Access Violation - code c0000005

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1

Hello. A friend sent me his UE4 Project that he can no longer open. The project is small, with only a few blueprints and meshes imported from Blender. The last time his happened, he started over. He sent the project to me and I get the same crash.

What might causes this? Crash report below.

MachineId:6E6B30FD4F9F8B1AC741AF86E75A7B98
EpicAccountId:1dadd1161f644482803a6b0e73f58427

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::VerifyImportInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2561]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2327]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2609]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2327]
UE4Editor_CoreUObject!FLinkerLoad::CreateImport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:4257]
UE4Editor_CoreUObject!FLinkerLoad::ResolveAllImports() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:1196]
UE4Editor_CoreUObject!FLinkerLoad::FinalizeBlueprint() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:1284]
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]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2561]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2327]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2609]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2327]
UE4Editor_CoreUObject!FLinkerLoad::CreateImport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:4257]
UE4Editor_CoreUObject!FLinkerLoad::ResolveDependencyPlaceholder() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:1090]
UE4Editor_CoreUObject!FLinkerLoad::ResolveDeferredDependencies() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:950]
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]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2561]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2327]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2609]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2327]
UE4Editor_CoreUObject!FLinkerLoad::Verify() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2105]
UE4Editor_CoreUObject!FLinkerLoad::FinalizeCreation() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2015]
UE4Editor_CoreUObject!FLinkerLoad::Tick() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:699]
UE4Editor_CoreUObject!FLinkerLoad::CreateLinker() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:404]
UE4Editor_CoreUObject!GetPackageLinker() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linker.cpp:657]
UE4Editor_CoreUObject!LoadPackageInternalInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1196]
UE4Editor_CoreUObject!LoadPackageInternal() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1423]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2561]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2327]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2609]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2327]
UE4Editor_CoreUObject!FLinkerLoad::Verify() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2105]
UE4Editor_CoreUObject!FLinkerLoad::FinalizeCreation() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2015]
UE4Editor_CoreUObject!FLinkerLoad::Tick() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:699]
UE4Editor_CoreUObject!FLinkerLoad::CreateLinker() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:404]
UE4Editor_CoreUObject!GetPackageLinker() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linker.cpp:657]
UE4Editor_CoreUObject!LoadPackageInternalInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1196]
UE4Editor_CoreUObject!LoadPackageInternal() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1423]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2561]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2327]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2609]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2327]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2609]
UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2327]
UE4Editor_CoreUObject!FLinkerLoad::Verify() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2105]
UE4Editor_CoreUObject!FLinkerLoad::FinalizeCreation() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2015]
UE4Editor_CoreUObject!FLinkerLoad::Tick() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:699]
UE4Editor_CoreUObject!FLinkerLoad::CreateLinker() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:404]
UE4Editor_CoreUObject!GetPackageLinker() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\linker.cpp:657]
UE4Editor_CoreUObject!LoadPackageInternalInner() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1196]
UE4Editor_CoreUObject!LoadPackage() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1437]
UE4Editor_UnrealEd!UEditorEngine::Map_Load() [d:\build++ue4+release-4.14+compile\sync\engine\source\editor\unrealed\private\editorserver.cpp:2445]
UE4Editor_UnrealEd!UEditorEngine::HandleMapCommand() [d:\build++ue4+release-4.14+compile\sync\engine\source\editor\unrealed\private\editorserver.cpp:6057]
UE4Editor_UnrealEd!UEditorEngine::Exec() [d:\build++ue4+release-4.14+compile\sync\engine\source\editor\unrealed\private\editorserver.cpp:5538]
UE4Editor_UnrealEd!UUnrealEdEngine::Exec() [d:\build++ue4+release-4.14+compile\sync\engine\source\editor\unrealed\private\unrealedsrv.cpp:615]
UE4Editor_UnrealEd!FEditorFileUtils::LoadMap() [d:\build++ue4+release-4.14+compile\sync\engine\source\editor\unrealed\private\filehelpers.cpp:2180]
UE4Editor_UnrealEd!FEditorFileUtils::LoadDefaultMapAtStartup() [d:\build++ue4+release-4.14+compile\sync\engine\source\editor\unrealed\private\filehelpers.cpp:3496]
UE4Editor_UnrealEd!FUnrealEdMisc::OnInit() [d:\build++ue4+release-4.14+compile\sync\engine\source\editor\unrealed\private\unrealedmisc.cpp:309]
UE4Editor_UnrealEd!EditorInit() [d:\build++ue4+release-4.14+compile\sync\engine\source\editor\unrealed\private\unrealed.cpp:89]
UE4Editor!GuardedMain() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\launch.cpp:136]
UE4Editor!GuardedMainWrapper() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\build++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32
ntdll

2

From my limited experience most of these issues occur because you did something wrong in a class’ constructor.

In Unreal constructors are used to instantiate class default objects CDO’s which do exist in the unreal editor before run-time. Basically whatever class you mark with the UCLASS() macro will have a CDO instantiated for it. Unreal simply uses the CDOs as a template to spawn in game Objects (actors, components etc). And CDOs are instantiated by using the classes’ constructors.

So if there is anything wrong with any constructor of a class marked as UCLASS() then the editor will crash at startup. And debugging it will be difficult.

Check for possible null pointer issues and access violations in class constructors.

Whenever you implement a constructor of a class make sure the game editor runs normally. That way, if it fails you can at least pinpoint the reason.

3

But this is a blueprint only project, shouldn’t that only be able to occur in a code project?

4

Hey choel,

I have a few questions/suggestions regarding your crash:

  • Could you please cause the crash to occur again, and provide the logs from your project’s Saved->Logs folder?
  • Try deleting the Saved and Intermediate folders after you grab the logs, then attempt to launch the project again.
  • Try opening a copy of the project in the 4.15 preview to see if the crash still occurs there as well.
  • If none of these suggestions work, the best course of action here would be for you to migrate each blueprint one-by-one into a clean project, restarting the editor after each migration so you can determine which blueprint is causing the crash. Once you have determined this, you can begin to debug the blueprint and see what could be causing the issue.
5

Moving the project to 4.15 appears to have resolved the issue, but I’m putting the logs here anyway, because I’m curious as to what the problem was.

6

Hey choel,

I believe that you are experiencing a similar, if not the same, crash as the one linked below:

This has been resolved for 4.15, which is why upgrading resolved your issue.

Have a great day!

7

I had the same problem. Can’t even debug anything because everything crashes when I try to open anything.

8

This is not resolved in 4.15.

I get this error in 4.15

It only happens to a packaged project when launched, and only on SOME computers. It works fine for me but my friend cant even launch the game without getting this error.

Please help:(

9

Hey 9robin3,

I highly recommended working in a later engine version, as there have been a ton of fixes since 4.15. If you’re still experiencing the issue in 4.18.3, feel free to submit a new report to us using the form detailed in the forum thread below:

https://forums.unrealengine.com/unreal-engine/announcements-and-releases/1410408-unreal-engine-bug-submission-form

Once we get that in, we can investigate and determine if a new bug needs to be entered.

Thanks

10

Hi i cant even open the project in newer versions it complains about hidden and protected methods…

Please just fix this, its a bug…

11

Please refer to the forum post linked above for information on submitting a bug report. In order to investigate, we will need more information from you, and the form linked in the forum thread will detail exactly what we need to help you out.

Thanks