Consistent Crash: 5.1 Sequencer crash "Pure virtual function being called while application was running (GIsRunning == 1)"

I am consistently getting a crash in 5.1 that throws an error message of “Pure virtual function being called while application was running (GIsRunning == 1)” - at first it was after deleting a transform track from an actor so I stopped doing that. Now it will happen while scrolling through the tracks of my level sequence.

Blockquote [2022.12.17-19.05.39:314][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:332][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:350][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:367][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:384][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:401][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:417][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:435][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:452][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:478][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:496][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:513][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:530][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:547][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:565][175]LogSlate: Warning: Slate: Had to block on waiting for a draw buffer
[2022.12.17-19.05.39:580][175]LogSlate: Window ‘Message’ being destroyed
[2022.12.17-19.05.39:591][175]Message dialog closed, result: Ok, title: Message, text: Pure virtual function being called while application was running (GIsRunning == 1).
[2022.12.17-19.05.39:591][175]LogOutputDevice: Warning:
Script Stack (0 frames) :
[2022.12.17-19.05.39:601][175]LogWindows: Error: appError called: Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsPlatformMisc.cpp] [Line: 440]
Pure virtual function being called
[2022.12.17-19.05.39:601][175]LogWindows: Windows GetLastError: The operation completed successfully. (0)

It spams the LogSlate: Warning for a while in the crash document. I am not touching any of the c++ in this project, it is purely a cinematic project.

Hi! Could you find the issue to this problem? I’m having a similar issue.