PackagingResults: Error: Unknown Cook Failure

Hello jason8,

Have you tried to recompile your project? Seems like there has been an assertion error, and a lot of unknown functions errors. Is there any chance you edited the engine source code, or changed the engine mid-project?

There also should be a log file inside your AppData/Roaming/Unreal Engine/AutomationTool folder you can take a peek into that as well.