Assertion failed: IsValid() File:D:\BuildFarm

Hi,

Today when I open any UMG widget in editor, I get instant crash with this report. Funny, yesterday it worked fine.

Why is it refering to D:\BuildFarm ? I dont have such path on my system.

Do you guys need any more info about this
Thanks

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

"Assertion failed: IsValid() [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.10\Engine\Source\Runtime\Core\Public\Templates\SharedPointer.h] [Line: 739] 
"

UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\misc\outputdevice.cpp:374]
UE4Editor_UMGEditor!FWidgetBlueprintEditor::UpdatePreview() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\umgeditor\private\widgetblueprinteditor.cpp:680]
UE4Editor_UMGEditor!FWidgetBlueprintEditor::InitWidgetBlueprintEditor() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\umgeditor\private\widgetblueprinteditor.cpp:86]
UE4Editor_UMGEditor!FAssetTypeActions_WidgetBlueprint::OpenAssetEditor() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\umgeditor\private\assettypeactions_widgetblueprint.cpp:32]
UE4Editor_UnrealEd!FAssetEditorManager::OpenEditorForAsset() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\unrealed\private\toolkits\asseteditormanager.cpp:311]
UE4Editor_UMGEditor!FAssetTypeActions_Base::AssetsActivated() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\developer\assettools\public\assettypeactions_base.h:41]
UE4Editor_ContentBrowser!SContentBrowser::OnAssetsActivated() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\contentbrowser\private\scontentbrowser.cpp:1757]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,TTypeWrapper<void> __cdecl(TArray<FAssetData,FDefaultAllocator> const & __ptr64,enum EAssetTypeActivationMethod::Type)>::Execute() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:282]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,void __cdecl(TArray<FAssetData,FDefaultAllocator> const & __ptr64,enum EAssetTypeActivationMethod::Type)>::ExecuteIfSafe() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:388]
UE4Editor_ContentBrowser!SAssetView::OnOpenAssetsOrFolders() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\contentbrowser\private\sassetview.cpp:2726]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,TTypeWrapper<void> __cdecl(void)>::Execute() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:282]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,void __cdecl(void)>::ExecuteIfSafe() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:387]
UE4Editor_Slate!FUICommandList::ConditionalProcessCommandBindings() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\commands\uicommandlist.cpp:206]
UE4Editor_Slate!FUICommandList::ProcessCommandBindings() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\commands\uicommandlist.cpp:150]
UE4Editor_ContentBrowser!SContentBrowser::OnKeyDown() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\editor\contentbrowser\private\scontentbrowser.cpp:926]
UE4Editor_Slate!<lambda_aecc0dcd28a75afb5aabe6b3b7d4c719>::operator()() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:3920]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FKeyEvent,<lambda_aecc0dcd28a75afb5aabe6b3b7d4c719> >() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:214]
UE4Editor_Slate!FEventRouter::RouteAlongFocusPath<FEventRouter::FBubblePolicy,<lambda_aecc0dcd28a75afb5aabe6b3b7d4c719>,FKeyEvent>() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:196]
UE4Editor_Slate!FSlateApplication::ProcessKeyDownEvent() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:3918]
UE4Editor_Slate!FSlateApplication::OnKeyDown() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:3845]
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\windows\windowsapplication.cpp:1260]
UE4Editor_Core!FWindowsApplication::DeferMessage() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\windows\windowsapplication.cpp:1709]
UE4Editor_Core!FWindowsApplication::ProcessMessage() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\windows\windowsapplication.cpp:707]
UE4Editor_Core!FWindowsApplication::AppWndProc() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\windows\windowsapplication.cpp:629]
user32
user32
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:884]
UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\launchengineloop.cpp:2391]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\launch.cpp:142]
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

Im sure you will ask, if it happens in new project created from Launcher. Yes, its totally reproducible on my end. Also I deleted all files from C:\Users\AppData\Local\UnrealEngine\4.10.

I’ve got the same problem, this morning all was fine, I closed UE editor with Widget editor opened (and game running in viewport), and I can’t open them after that …

It happened yesterday too …

The only wait I’ve found is to rebuild the engine, and start again, but it’s long …

In fact it happen each time we close the UMG editor … I tried this morning with a fresh compiled version, just opened the UMG editor and closed it (didn’t do anything in the blueprint) and it won’t open anymore …

New test with 4.9.2, it doesn’t bug when opening UMG editor…

Hello tas,

Thank you for testing this in a clean project, however I still have a few questions for you that will help narrow down what issue it is that you are experiencing.

Quick questions:

  1. Could you provide a detailed set of steps to reproduce this issue on our end?
  2. Could you provide screen shots of any blueprints that may be involved with this issue?
  3. Was the projects that you are using upgraded from an older version of the engine?
  4. When you say that you receive the crash when “opening” a widget, do you mean that you are opening up the widget blueprint or is this while running the project?
  5. Are you using windows 10?
  1. Open new project(blank TPP), create UMG widget, open this widget(double click), crash.
  2. There is nothing special in project that is crashing. I do it in blank project.
  3. It also happens in project upgraded from 4.9.2, but primarily it happens in project created in 4.10 created from scratch.
  4. It only happens when I open UMG widget. I can run editor normally with no crash, until I open UMG.
  5. Yes
  6. It doesnt happen in 4.9.2
  1. I use win7, if it can help

good to know its not win10 related.

Could you run a quick test with the preview 4 version of 4.10 and let me know if this is still an issue?

sure, lets try our luck :slight_smile:

same on 4.10 preview 4.
Rudy, can you reproduce it ?

I tried a couple more ways to try and reproduce the issue that you are having. I was unable to do so. Could you (tas and mdonge) provide your dxdiag?

link text

Rudy, would it be helpful if I start Editor from VS in debugging mode, catch the crash and send you over some logs ? Does it provide exact cause of the exception ?

Hope it can help you (I don’t have 4.10 to try something this morning, sorry)
link text

I have the same problem, too.
And here’s my dxdiag link text
Additionally, I skipped ‘DirectInput’ and System Information when I executed dxdiag.

Hello tas,

Could you try updating your drivers and let me know if this issue is still occurring?

Rudy, which drivers do you mean exactly ?

Do you mean the video card driver?
Yes, I updated last night (AMD 15.201.1151.1007-151103a-296068E) and it’s still occurring