This is a common crash in the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred.
The callstack shares some similarities to [Link Removed]
Source Context
347 static TSharedPtr< FWindowsWindow > FindWindowByHWND(const TArray< TSharedRef< FWindowsWindow > >& WindowsToSearch, HWND HandleToFind) 348 { 349 for (int32 WindowIndex = 0; WindowIndex < WindowsToSearch.Num(); ++WindowIndex) 350 { 351 TSharedRef< FWindowsWindow > Window = WindowsToSearch[WindowIndex]; 352 if (Window->GetHWnd() == HandleToFind) 353 { 354 return Window; 355 } 356 ***** } 357 358 return TSharedPtr< FWindowsWindow >(nullptr); 359 }
repro steps currently unknown
Access violation - code c0000005 (first/second chance not available) UE4Editor_ApplicationCore!FindWindowByHWND() [windowsapplication.cpp:357] UE4Editor_ApplicationCore!FWindowsApplication::IsCursorDirectlyOverSlateWindow() [windowsapplication.cpp:372] UE4Editor_Slate!FSlateApplication::ProcessMouseMoveEvent() [slateapplication.cpp:5955] UE4Editor_Slate!FSlateApplication::SynthesizeMouseMove() [slateapplication.cpp:3925] UE4Editor_Slate!FSlateApplication::TickApplication() [slateapplication.cpp:1718] UE4Editor_Slate!FSlateApplication::Tick() [slateapplication.cpp:1595] UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3378] 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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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-52615 in the post.