Slitherine

I loaded Soviet Corps, but when I try to execute from the autorun.exe, I get a Runtime error that says "Failed to extract project file to memory". I can execute from autorunsc.exe and autorunac.exe with no problems.

That probably means that the installation is corrupted.
Try redownloading and reinstalling the patch again:

http://ftp.eu.matrixgames.com/pub/Panze ... e-v125.zip

Thanks VPaulus... It worked and all DLCs and extensions work...