Updated to 4.15 then compile error "PackagingResults:Error: Error Unknown Cook Failure"

Howdy all;
I updated to 4.15. I tried to package my VR game for windows 64. I got the following error.

UATHelper: Packaging (Windows (64-bit)): Program.Main: AutomationTool exiting with ExitCode=25 (Error_UnknownCookFailure)
UATHelper: Packaging (Windows (64-bit)): BUILD FAILlink textED
PackagingResults:Error: Error Unknown Cook Failure
link text

If anyone happens to know what might cause this problem I would be so very grateful.
I attached my log