Editor crash creating New Service/Decorator/Task in Behavior Tree

link textHi there. Using 4.12.5, I get a crash whenever I try to create a New Service, Decorator or Task in a Behavior Tree, whether the behavior tree is populated or not.

I had success creating a new service for a behavior tree in a brand new project, so that leads me to believe there’s a conflict with something in my project. I disabled all 3rd party & experimental plug-ins and restarted, hoping that there was a conflict in there somewhere, but I still got the same crash.

Here’s the debug info generated on crash and I’ve attached Report.wer, CrashContent.runtime-xml.

Thanks,
Alec

Assertion failed: IsValid() [File:D:\Build\++UE4+Release-4.12+Compile\Sync\Engine\Source\Runtime\Core\Public\Templates\SharedPointer.h] [Line: 739] 

UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:440]
UE4Editor_Kismet!FSCSViewportSummoner::SpawnTab() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\kismet\private\blueprinteditortabfactories.cpp:309]
UE4Editor_Kismet!FWorkflowCentricApplication::CreatePanelTab() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\kismet\private\workflowcentricapplication.cpp:83]
UE4Editor_Kismet!TMemberFunctionCaller (__cdecl FWorkflowCentricApplication::*)(FSpawnTabArgs const & __ptr64,TSharedPtr) __ptr64>::operator(),TSharedPtr >::ApplyAfter_ExplicitReturnType,TMemberFunctionCaller (__cdecl FWorkflowCentricApplicati() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\delegates\tuple.h:93]
UE4Editor_Kismet!TBaseRawMethodDelegateInstance<0,FWorkflowCentricApplication,TSharedRef __cdecl(FSpawnTabArgs const & __ptr64),TSharedPtr >::Execute() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:550]
UE4Editor_Slate!TBaseDelegate,FSpawnTabArgs const & __ptr64>::Execute() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\delegates\delegatesignatureimpl_variadics.inl:521]
UE4Editor_Slate!FTabManager::SpawnTab() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\docking\tabmanager.cpp:1292]
UE4Editor_Slate!FTabManager::RestoreArea_Helper() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\docking\tabmanager.cpp:1151]
UE4Editor_Slate!FTabManager::RestoreSplitterContent() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\docking\tabmanager.cpp:1266]
UE4Editor_Slate!FTabManager::RestoreArea_Helper() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\docking\tabmanager.cpp:1244]
UE4Editor_Slate!FTabManager::RestoreSplitterContent() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\docking\tabmanager.cpp:1266]
UE4Editor_Slate!FTabManager::RestoreArea_Helper() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\docking\tabmanager.cpp:1244]
UE4Editor_Slate!FTabManager::RestoreSplitterContent() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\docking\tabmanager.cpp:1266]
UE4Editor_Slate!FTabManager::RestoreArea_Helper() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\docking\tabmanager.cpp:1244]
UE4Editor_Slate!FTabManager::RestoreSplitterContent() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\docking\tabmanager.cpp:1266]
UE4Editor_Slate!FTabManager::RestoreArea_Helper() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\docking\tabmanager.cpp:1235]
UE4Editor_Slate!FTabManager::RestoreArea() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\docking\tabmanager.cpp:1127]
UE4Editor_Slate!FTabManager::RestoreFrom() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\docking\tabmanager.cpp:700]
UE4Editor_UnrealEd!SStandaloneAssetEditorToolkitHost::RestoreFromLayout() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\unrealed\private\toolkits\sstandaloneasseteditortoolkithost.cpp:123]
UE4Editor_UnrealEd!FAssetEditorToolkit::RestoreFromLayout() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\unrealed\private\toolkits\asseteditortoolkit.cpp:1038]
UE4Editor_Kismet!FWorkflowCentricApplication::SetCurrentMode() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\kismet\private\workflowcentricapplication.cpp:70]
UE4Editor_Kismet!FBlueprintEditor::SetCurrentMode() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\kismet\private\blueprinteditor.cpp:1617]
UE4Editor_Kismet!FBlueprintEditor::RegisterApplicationModes() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\kismet\private\blueprinteditor.cpp:1844]
UE4Editor_Kismet!FBlueprintEditor::InitBlueprintEditor() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\kismet\private\blueprinteditor.cpp:1672]
UE4Editor_Kismet!FBlueprintEditorModule::CreateBlueprintEditor() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\kismet\private\blueprinteditormodule.cpp:263]
UE4Editor_AssetTools!FAssetTypeActions_Blueprint::OpenAssetEditor() [d:\build\++ue4+release-4.12+compile\sync\engine\source\developer\assettools\private\assettypeactions\assettypeactions_blueprint.cpp:84]
UE4Editor_UnrealEd!FAssetEditorManager::OpenEditorForAsset() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\unrealed\private\toolkits\asseteditormanager.cpp:338]
UE4Editor_BehaviorTreeEditor!FBehaviorTreeEditor::HandleNewNodeClassPicked() [d:\build\++ue4+release-4.12+compile\sync\engine\source\editor\behaviortreeeditor\private\behaviortreeeditor.cpp:1725]
UE4Editor_BehaviorTreeEditor!TBaseSPMethodDelegateInstance<1,FBehaviorTreeEditor,0,TTypeWrapper __cdecl(void)>::Execute() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:321]
UE4Editor_BehaviorTreeEditor!TBaseSPMethodDelegateInstance<1,FBehaviorTreeEditor,0,void __cdecl(void)>::ExecuteIfSafe() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:427]
UE4Editor_Slate!SToolBarButtonBlock::OnClicked() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\multibox\stoolbarbuttonblock.cpp:306]
UE4Editor_Slate!TMemberFunctionCaller::operator()<>() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\delegates\delegateinstanceinterface_variadics.h:161]
UE4Editor_Slate!TTupleImpl >::ApplyAfter_ExplicitReturnType >() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\delegates\tuple.h:128]
UE4Editor_Slate!TBaseSPMethodDelegateInstance<0,SToolBarButtonBlock,0,FReply __cdecl(void)>::Execute() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:321]
UE4Editor_Slate!TBaseDelegate::Execute() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\public\delegates\delegatesignatureimpl_variadics.inl:521]
UE4Editor_Slate!SButton::OnMouseButtonUp() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\widgets\input\sbutton.cpp:275]
UE4Editor_Slate!::operator()() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4598]
UE4Editor_Slate!FEventRouter::Route >() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:215]
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4587]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5041]
UE4Editor_Slate!FSlateApplication::OnMouseUp() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5021]
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:1510]
UE4Editor_Core!FWindowsApplication::DeferMessage() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:1850]
UE4Editor_Core!FWindowsApplication::ProcessMessage() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:745]
UE4Editor_Core!FWindowsApplication::AppWndProc() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:667]
user32
user32
rxcore
user32
user32
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:903]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2729]
UE4Editor!GuardedMain() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\launch.cpp:148]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\build\++ue4+release-4.12+compile\sync\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

Hey GrayHulk-

I noticed that you posted this question at the following link as well. I am closing this post in order to focus attention for this issue in one location and to help those searching for solutions to this in the future.

Cheers