Unreal Editor crashes on launch

Development Platform & Builds
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1

When I try to launch the Unreal Editor for the launcher It crashes at 45% loading and this appears

MachineId:
EpicAccountId:

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

“”

VCRUNTIME140
UE4Editor_Core!FGenericPlatformString::LogBogusChars() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\genericplatform\genericplatformstring.cpp:38]
UE4Editor_Core!operator<<() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\containers\string.cpp:1075]
UE4Editor_Engine!FMemoryArchive::operator<<() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\serialization\archive.h:41]
UE4Editor_ShaderCore!operator<<() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\shadercore\private\shader.cpp:212]
UE4Editor_Engine!TShaderMap::SerializeInline() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\shadercore\public\shader.h:1141]
UE4Editor_Engine!FMaterialShaderMap::Serialize() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\materials\materialshader.cpp:1690]
UE4Editor_Engine!FMaterialShaderMap::LoadFromDerivedDataCache() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\materials\materialshader.cpp:782]
UE4Editor_Engine!FMaterial::CacheShaders() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\materials\materialshared.cpp:1339]
UE4Editor_Engine!UMaterialInstance::CacheShadersForResources() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\materials\materialinstance.cpp:1415]
UE4Editor_Engine!UMaterialInstance::CacheResourceShadersForRendering() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\materials\materialinstance.cpp:1344]
UE4Editor_Engine!UMaterialInstance::PostLoad() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\materials\materialinstance.cpp:1736]
UE4Editor_CoreUObject!UObject::ConditionalPostLoad() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\obj.cpp:723]
UE4Editor_CoreUObject!EndLoad() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1286]
UE4Editor_CoreUObject!LoadPackageInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1042]
UE4Editor_CoreUObject!ResolveName() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:681]
UE4Editor_CoreUObject!StaticLoadObjectInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:768]
UE4Editor_CoreUObject!StaticLoadObject() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:832]
UE4Editor_UMG!ConstructorHelpersInternal::FindOrLoadObject() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\public\uobject\constructorhelpers.h:32]
UE4Editor_UMG!ConstructorHelpers::FObjectFinder::FObjectFinder() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\public\uobject\constructorhelpers.h:104]
UE4Editor_UMG!UWidgetComponent::UWidgetComponent() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\umg\private\components\widgetcomponent.cpp:517]
UE4Editor_CoreUObject!UClass::CreateDefaultObject() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\class.cpp:2657]
UE4Editor_CoreUObject!UObjectLoadAllCompiledInDefaultProperties() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectbase.cpp:658]
UE4Editor_CoreUObject!ProcessNewlyLoadedUObjects() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\coreuobject\private\uobject\uobjectbase.cpp:752]
UE4Editor!FEngineLoop::PreInit() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\launchengineloop.cpp:1392]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\launch.cpp:110]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32
ntdll

***My dxdiag is PROCESSOR: Intel Core i7-3770k 3.5ghz
MEMORY: 16384MB Ram
GPU: Nvidia GeForce GTX 560ti
DirectX 11 ***

Thank you,

2

Hey ,

One of our engineers indicated that it could be a corrupt shader in your Derived Data Cache (DDC). Could you try clearing your DDC?

It is located here: C: \ Users \ [USERNAME] \ AppData \ Local \ UnrealEngine \ 4.10 \ DerivedDataCache

If that doesn’t help, then we will go from there.

-.

3

Thank you ,

I will attempt this And will reply with a positive or a negative.
With much thanks,

4

I’m marking this answered until it can be tested on your end. Just reply to re-open.