Hello. dhamrick:I understand your frustration and can't give you a direct answer to your question. I have burned discs before in a spindle that worked fine and then the next disc in the spindle will not work. Not sure what causes it but it does happen. I think most people on the board would agree that there are certain steps you can take which will help you avoid the majority of problems people experience with burning:1. Use good media. See the list previously provided.2. Make sure your firmware is up to date so that your burner will recognize the media you are using. This is especially true with older burners and 16x media.3. Make sure you have enough memory.4. Try to close down all other programs which may be running in the background.Based on the Nero log, it is clear that your burner does not like the discs you are using.Media Specific [16..63]:00 60 00 10 20 30 40 50 - 00 00 00 21 00 00 00 00 .`...0@P...!....00 02 FE 10 00 02 FF A0 - 00 00 00 00 00 00 00 00 ................00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................1:37:23 AM #25 CDR -1046 File ThreadedTransferInterface.cpp, Line 1765Illegal disc If you do these things, it is most likely going to solve your problems. If not, post back with a new Nero log after you have done the items suggested and maybe we can help you further.