My MD4 has been great for 2 years now. UNTIL TODAY! I tried to eject the disk and it gave me "Disc Locked." So I read the troublshooting in the manual and it says that "Press TOC Write." I did that. Still gives me disc locked. Anyone else have a disc locked in their recorder?! Seems that the MD4 thinks the TOC is messed up on the disc. I've tried recording and updating the TOC no luck any ideas?