For solution, http://portingteam.com/files/file/7401-ripper/ Find my posts. Leaving this here despite 10 year gap because this is Googles first return for the issue.

Hi there. I just managed to fix this issue myself, as it's plagued me occasionally for years. Ripper is a favorite of mine. The problem was part of Ripper's initial release back in 1996. Back then, it could be bypassed with the proper bootdisk, provided by Take 2. It is not caused by a corrupt ISO, …