Bug Report - Running build uploaded to Steam causes fatal crash

I recently moved my project from UE 4.13 to 4.14.1 and am currently experiencing a fatal crash after uploading the game to Steam.

118186-steam_drm_crash.jpg

This crash does not occur before uploading it to Steam, only after downloading the build from the steam library.

This project does not use the new experimental Event Driven Loader.
I have never run into any of these issues before.
Any help is greatly appreciated.
/Best Regards

After investigating this issue in every way possible over the weekend, this was most likely caused by a temporary issue with the steam service or internet provider. For some reason uploaded builds got corrupted, and after the weekend these issues no longer seem to exist.

The same builds can now be uploaded and downloaded as usual, so this problem was most likely not caused by Unreal Engine.
/Best Regards