Package error - Unhandled exception: System.IO.FileLoadException:

Hi,

I am trying to package a simple architecture walkthrough level. But I keep getting this error: “PackagingResults: Error: Unhandled exception: System.IO.FileLoadException: Could not load file or assembly”

I have also attached the log file.[link text][2]

I am new to Unreal, any help will be greatly appreciated.

Thanks.