Does anyone know why the following games (downloaded from the Saturn section of this site) tells me the disc is unreadable in my SSF emulator when mounting them to a virtual drive?

All my other Saturn games work fine this way. The following do not:

Virtua Cop 2, Virtua Fighter 2, X-Men Vs. Street Fighter, Sega Rally Championship, Myst, House of the Dead, Die Hard Trilogy, The Mansion of Hidden Souls, Resident Evil and Nights into Dreams.

Any thoughts?

*moving*
Administraters are more likely to check here.

Disregard the part about the Saturn section. That was originally posted on EmuAslum where I actually downloaded the Saturn disc images (after a $30 donation I might add).