4.7.3/4.7.4 update causes project crash

[hippowombat]

Can’t launch my project started in 4.7.1. Updated to 4.7.2 with no hiccups, now I can’t access my project since 4.7.3 update. 4.7.4 is no different. Anyone else having this issue? anything I can do?

[qdelpeche]

I have successfully converted Kaboom Arena from 4.7.2 to 4.7.3 to 4.7.4 without any issues.

Do you have any more information for us? Screen shot showing error … maybe a crash log or crash report … it is a little bit difficult to diagnose without some extra information.

[hippowombat]

@qdelpeche;264887

I have successfully converted Kaboom Arena from 4.7.2 to 4.7.3 to 4.7.4 without any issues.

Do you have any more information for us? Screen shot showing error … maybe a crash log or crash report … it is a little bit difficult to diagnose without some extra information.

Here’s what it says:

@UE4 LAUNCHER

Unknown exception - code 00000001 (first/second chance not available)

Assertion failed: !HasAnyFlags(RF_NeedLoad|RF_NeedPostLoad) [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.7\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectLinker.cpp] [Line: 96]
Detaching from existing linker for …//…//…//…//

KERNELBASE + 35740 bytes
UE4Editor_Core!FOutputDeviceWindowsError::Serialize() + 292 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:95]
UE4Editor_Core!FOutputDevice::Logf__VA() + 248 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\misc\outputdevice.cpp:144]
UE4Editor_Core!FDebug::AssertFailed() + 1079 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\misc\outputdevice.cpp:224]
UE4Editor_CoreUObject!UObject::SetLinker() + 520 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\uobjectlinker.cpp:96]
UE4Editor_CoreUObject!ULinkerLoad::CreateExport() + 3984 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3420]
UE4Editor_CoreUObject!ULinkerLoad::CreateExportAndPreload() + 27 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2520]
UE4Editor_CoreUObject!ULinkerLoad::LoadAllObjects() + 603 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2628]
UE4Editor_CoreUObject!LoadPackageInternal() + 2025 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:894]
UE4Editor_UnrealEd!UEditorEngine::Map_Load() + 5034 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\editorserver.cpp:2245]
UE4Editor_UnrealEd!UEditorEngine::HandleMapCommand() + 349 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\editorserver.cpp:5680]
UE4Editor_UnrealEd!UEditorEngine::Exec() + 797 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\editorserver.cpp:5180]
UE4Editor_UnrealEd!UUnrealEdEngine::Exec() + 273 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\unrealedsrv.cpp:742]
UE4Editor_UnrealEd!FEditorFileUtils::LoadMap() + 789 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\filehelpers.cpp:1910]
UE4Editor_UnrealEd!FEditorFileUtils::LoadDefaultMapAtStartup() + 216 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\filehelpers.cpp:3070]
UE4Editor_UnrealEd!FUnrealEdMisc::OnInit() + 2263 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\unrealedmisc.cpp:299]
UE4Editor_UnrealEd!EditorInit() + 3254 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\unrealed.cpp:86]
UE4Editor!GuardedMain() + 926 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launch.cpp:133]
UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]

[qdelpeche]

Oh … that is very helpful. 8-{

I did find a similar problem on AnswerHub and Haliday suggested this:

Additionally, please try disabling deferred dependency loading system (by overriding bDeferDependencyLoads in BaseEngine.ini to bDeferDependencyLoads=false). This will revert back to our old way of loading blueprints, and is more risky when it comes to cyclic dependencies, but it may unblock your project. Let me know what happens after trying that, as well. Thanks!

Can you try this.

[4.7.3 to 4.7.4]Project Crash on Startup]([4.7.3 to 4.7.4] Project Crash on Startup - Multiplayer & Networking - Epic Developer Community Forums)

[anonymous_user_33800a51]

Hi hippowombat,

Thanks for letting us know about this! It looks like this is related to a crash we have reported in our system (UE-11813), and doesn’t appear to be same as crash noted above by qdelpeche (but thanks for looking into it, qdelpeche!). I’ve added your information to bug report. It looks like they’re hoping to find cause and fix it by 4.8. In meantime, you may need to manually remove Content from project directly and add assets back in one at a time until you discover which is causing problem. My guess is that it’s Blueprint related.

[hippowombat]

@;265770

Hi hippowombat,

Thanks for letting us know about this! It looks like this is related to a crash we have reported in our system (UE-11813), and doesn’t appear to be same as crash noted above by qdelpeche (but thanks for looking into it, qdelpeche!). I’ve added your information to bug report. It looks like they’re hoping to find cause and fix it by 4.8. In meantime, you may need to manually remove Content from project directly and add assets back in one at a time until you discover which is causing problem. My guess is that it’s Blueprint related.

Thanks for info, I appreciate your time spent looking into this, both of you!

[anonymous_user_33800a51]

Would you be able to supply project with which this crash occurs? developers have asked if they can take a look at it, as they need more to go on to fix it. If you can upload it somewhere and PM me a link, I can get it to them. Thanks!

[hippowombat]

Sorry for delay, uploading files now, pm incoming.

[anonymous_user_33800a51]

Got it. I’ve downloaded project and handed it over to developers. I’ll let you know when I see any update on bug. Thanks!