Unreal process has crashed

[DenBlack]

A few days ago, there was a power failure while I was playing Panzer Corps 2 (Stream). Since then, impossible to load a saved game. I always get this message :

An Unreal process has crashed : UE4-PanzerCorps2
LowLevelFatalError [File:Unknown] [Line: 724] BulkData compressed header read error. This package may be corrupt!

I went to my Steam account and had my Panzer Corps 2 files scanned. According to Steam everything is fine.

I went to my saved games files and destroyed the Cerberus scenario #4 I was playing when the power failure occurred, but I still get the same message error.

What can I do more ?

[DenBlack]

I deleted my last saved game and "voilà" everything back to normal. A scary episode.