This is a common crash affecting users in 4.16, and has occurred since at least 4.14.
User Descriptions
Source Context
1657 bool bCanPaste = false; 1658 if (GEditor->GetSelectedComponentCount() > 0) 1659 { 1660 check(GEditor->GetSelectedActorCount() == 1); 1661 ***** auto SelectedActor = CastChecked<AActor>(*GEditor->GetSelectedActorIterator()); 1662 bCanPaste = FComponentEditorUtils::CanPasteComponents(SelectedActor->GetRootComponent()); 1663 } 1664 else 1665 { 1666 bCanPaste = GUnrealEd->CanPasteSelectedActorsFromClipboard(GetWorld()); 1667 } 1668 1669 return bCanPaste;
repro steps currently unknown
Assertion failed: GEditor->GetSelectedActorCount() == 1 [File:D:\Build\++UE4+Release-4.16+Compile\Sync\Engine\Source\Editor\LevelEditor\Private\LevelEditorActions.cpp] [Line: 1661] UE4Editor_LevelEditor!FLevelEditorActionCallbacks::Paste_CanExecute() [leveleditoractions.cpp:1662] UE4Editor_Slate!FUICommandList::ConditionalProcessCommandBindings() [uicommandlist.cpp:213] UE4Editor_Slate!FUICommandList::ProcessCommandBindings() [uicommandlist.cpp:160] UE4Editor_UnrealEd!SEditorViewport::OnKeyDown() [seditorviewport.cpp:109] UE4Editor_LevelEditor!SLevelViewport::OnKeyDown() [slevelviewport.cpp:444] UE4Editor_Slate!<lambda_2afcd964c763e269e2d1a63f3a72f846>::operator() [slateapplication.cpp:4630] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FKeyEvent,<lambda_2afcd964c763e269e2d1a63f3a72f846> >() [slateapplication.cpp:239] UE4Editor_Slate!FEventRouter::RouteAlongFocusPath<FEventRouter::FBubblePolicy,<lambda_2afcd964c763e269e2d1a63f3a72f846>,FKeyEvent>() [slateapplication.cpp:221] UE4Editor_Slate!FSlateApplication::ProcessKeyDownEvent() [slateapplication.cpp:4628] UE4Editor_Slate!FSlateApplication::OnKeyDown() [slateapplication.cpp:4541] UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1539] UE4Editor_Core!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2127] UE4Editor_Core!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:867] UE4Editor_Core!FWindowsApplication::AppWndProc() [windowsapplication.cpp:714] user32!UserCallWinProcCheckWow() user32!DispatchMessageWorker() UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [windowsplatformmisc.cpp:1009] UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3058] UE4Editor!GuardedMain() [launch.cpp:166] UE4Editor!GuardedMainWrapper() [launchwindows.cpp:134] UE4Editor!WinMain() [launchwindows.cpp:210] UE4Editor!__scrt_common_main_seh() [exe_common.inl:253] kernel32!BaseThreadInitThunk() ntdll!RtlUserThreadStart()
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