Bad or no ISRC and MCN codes from CD audio discs in ImgBurn Bugs Posted September 8, 2010 I only check the first 100 sectors on the disc for the MCN during my subchannel scan, but it should be there - right?! EDIT: LOL, scrap that. I dug out an old LiteOn and found the issue - an uninitialised variable that could prevent the new code from running. It's fluke that the ISRC code worked for you (and me) as that had the same problem (was basically a copy + paste of what I'd done for the MCN bit) Consider it fixed for 126.96.36.199. Hi, I'm only confirming that the new version 188.8.131.52 works well regarding the above-mentioned issues. Good work:-) I will recommend the new version to our customers and will send them the PDF guide for creating disc images suitable for mastering.