Rendering a movie crashes after warming up

Development Rendering
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1

Hello there, couple of days ago I was able to render without a hitch a movie using render movie queue. Now my project keeps crashing each time I try to render. it gets stuck at processing for couple of seconds and then it crashes entirely. This is the crash message:

Assertion failed: !IsComplete() [File:D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Async/Future.h] [Line: 183]

UE4Editor_Core
UE4Editor_Core
UE4Editor_MovieRenderPipelineCore
UE4Editor_MovieRenderPipelineCore
UE4Editor_MovieRenderPipelineCore
UE4Editor_MovieRenderPipelineCore
UE4Editor_MovieRenderPipelineCore
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll

I tried reinstalling 4:27 , changed the delay value, graphic card is updated nothing worked.
Can someone help me please?

2

This just happened to me at the 11th hour before client delivery. A workaround for me was to rename the level sequence in the content browser then re-import it into the map.