I have a PS2 V4 Gap Bios PS2. The Magic 3.1+ mod chip was installed a few days ago. Evrythng worked fine. I haven't touched, moved, or even breathed on the PS2 until now. The Ps2 will boot up original US games but whenever I put in a DVD/CD back up OR an original import game I get an error that says..."Please insert a Playstation or Playstation 2 format disk." The lens has been cleaned and all connections are still intact and connected perfectly. Does anyone have any suggestions? Thank you in adavance.