> Ok...I checked it....From read only media (dvd/cd) with remove-rebuilt-source
> enabled....Works fine.
> The runtime error was most likely caused by a corrupt zipfile structure then. Be
> sure you got settings->zipsettings->full zipstructure scan enabled. This is
> slower zipscan mode but it detects all kind of structure errors.
> There is of course a slight possibility that something's wrong with the media,
> too or the cable to the drive. So clrmamepro receives bad data but rebuilding
> works definetly fine and an enabled remove option while working with readonly
> media isn't any problem at all.
>
Odd, it works fine when I untick the remove sourcefile button so I don't see how it can be a problem with the media or the zip?

This was actually a DVD+RW, but as you can't just write to it from Windows I assumed it was the same as read-only, maybe not though.