I have a Memorex DVD+/-DLRWL1 F16. I'm using Nero 188.8.131.52 and Nerovision 184.108.40.206-- I settled on those versions after fails with others, and after many successful burns with no coasters, I worry about making changes without being absolutely sure what I'm doing. The problem is that the drive won't recognize 16x dvd-r's. I learned this after using up the supply of 8x's (Memorex) I got with the burner, and bought a stack of 16x Memorex dvd-r's-- the error message I get in Nero CD-DVD Speed is "CANNOT WRITE MEDIUM - INCOMPATIBLE FORMAT (023005)". I have also tried Vebatim 16x's with no luck (at least these fails don't produce coasters as they reject the disc immediately). I was fortunate enough to find one of those giant stacks of 8x's on closeout at Office Depot, but I haven't seen any on a shelf since and the ones I have are about to run out. I'm thinking maybe I need a firmware update or another Nero version, but as I said, with as much tweaking as I had to do to get it to work reliably in the first place, I'm very hesitant to go mucking about with it until I'm sure I know what I'm doing. Any advice would be greatly appreciated. Below I'm posting the log of a failed test burn with a Verbatim 16x DVD-R, and an InfoTool log. 16x burn fail InfoTool Thanks in advance for any and all advice.