That's strange...if there's an error with the DBF or the graphics files, everyone should be experiencing the error. Did you notice any problems during the installation or are there any other similar problems when you're trying to use the roster?
it doesn't replace them in the xplayer.viv file, it adds them in new folders using customart method.
so considering you don't have already a sprewell installed using the customart method, it won't erased your original one
There's a few things that can be fixed with the art installations. I might have seperate PLAYERPKG values in v1.1 (eg laspre0) so that the correct face is loaded depending on the roster.