Problem with ART0.FPK

[Vorpal]

I checked the log files (I have the "black terrain" problem) and among other messages I found that the engine had troubles retrieveing some resources from the /assets/ directory. There's teh ART0.FPK file that presumably contains these resources, however I could not view its contents using the FPK extractor provided by Firaxis themselves. Could this be a lead to the problems we're having? Can someone confirm this experiment?

Also, the .CAB files on CDs cannot be opened by standard Windows CAB viewers and neither by WinZip. Is someone able to open them?