This has happened several times already with discs that looked perfect and free of scratches or smudges. I have it set to Ultra-Secure ripping and followed all the recommendations when setting it up. Has ripped about a hundred discs successfully so far including a few very old ones with discoloration and scratches. But these few that could absolutely not be ripped I ended up replacing with new copies. Some of these CDs are rare and this is getting expensive. I have a perfectly clean hybrid SACD (have ripped all the other SACD pressings in this series of Can reissues and many other hybrid SACD discs) and I examined it closely under bright light, cleaned it repeatedly with soft cloth rubbing center to outside edge. There is absolutely no visible defect in this disc and any collector would class it as MINT, so why do I keep getting ripping errors on every track? What can I do? Very discouraged about this...