A .CAB file is a kind of package file, an RPM for Windows, if you will. If its corrupted, well, then there is a problem. Try and get another disk.

If you frequently install a CAB file or a Cabinet file, you can add 'Install CAB' option in your context menu when you right click on CAB files.

This is the function that copies files from C:\Windows\Temp folder into the .CAB file, and can be tricked into reading some other files instead,” Kolsek explained.

I've got InstallShield working perfectly, except my files are just sitting out in the setup directory and not in a cab file or anything.