This is a common crash that has occurred since at least the 4.10 release, although there seems to be a gap where it may not have occurred through the 4.12-4.14 releases, but returned with 4.15.
User Descriptions
Source Context
424 const float TimeSnapInterval = GetFixedFrameInterval(); 425 426 if (SequencerSnapValues::IsTimeSnapIntervalFrameRate(TimeSnapInterval) && bIsFixedFrameIntervalPlayback) 427 { 428 GEngine->SetMaxFPS(1.f / TimeSnapInterval); 429 } 430 else 431 { 432 GEngine->SetMaxFPS(OldMaxTickRate); 433 } 434 } 435 436 ***** if (GetSelectionRange().IsEmpty() && GetLoopMode() == SLM_LoopSelectionRange) 437 { 438 Settings->SetLoopMode(SLM_Loop); 439 }
repro steps currently unknown. Potentially related to deleting assets.
Access violation - code c0000005 (first/second chance not available) UE4Editor_Sequencer!FSequencer::Tick() [sequencer.cpp:439] UE4Editor_UnrealEd!FTickableEditorObject::TickObjects() [tickableeditorobject.h:21] UE4Editor_UnrealEd!UEditorEngine::Tick() [editorengine.cpp:1424] UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [unrealedengine.cpp:402] UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3215] 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()
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-48647 in the post.