Hi FireflyST.
A good rule of thumb in dealing with CD drives, is, make sure that the SCSI # on the CDdrive match the Unit # on your CD0 icon and CacheCDFS
You'll find CD0 in your DEVS/DosDrivers drawer, click once on the icon and choose info in the menu and it'll list the unit #, so make sure it's the same as your CD drive.
Maybe that'll help :-)