First off, thanks to all who have any suggestions. ----- i have been using imgburn for awhile now and this is the first time i've had any problems. i have made successful back ups of my 360 discs. Recently downloaded a few backups from sites and now everytime i try to burn the dvd/iso imgburn fails for the first disc, copy retry fails and i end up with a coaster. but if i start over with another blank disc it runs through fine and works perfectly. if i try another file the same thing happens, first disc fails second disc works, and that also happens if i go back to a prior file that was successful before. i tried to update to the lasest imgburn and still have the same problem. the discs i use are the same and i havent changed any setting. thanks again for any help.