DC Games

Got a little problem. I have Virtua Tennis and Code Veronica on CD (yes, they're copied, I didn't do it though...) and I'm using the Utopia CD Loader v1.1. Anywho, the first day I got the CDs (4: 1 Tennis, 2 Res Evil, 1 Utopia), I managed to load Tennis and even played through the arcade mode. I was, however, unable to load the first disc of Res Evil. It went from the Utopia screen to a blank screen to the DC Menu screen. I did manage to load the second Res Evil disc. But now, a few days after I had gotten the discs, I tried to play Tennis and it won't work anymore. It does exactly the same thing as Res Evil disc one. The only thing that I did between the time I first got the discs and today is I went online using the DC. So is there some kind of trick I don't know or are the discs just busted? Please help, and send any answers to my email if possible. Thanks.