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.

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.

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.

Be sure to file this under "Experienced users only." As well as Windows Phone 7.8, (build 8858) files are also available for the previous build 8779 aka 'Tango'. So how does one go about this?

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.