Hi . I have a problem trying to master after pre-mastering . I get an error message saying master track is too short use pre-mastering to fix it. The tracks are plenty long. I don't have the manual . Does the pre-mastering light always blink when that process is going ? The unit has been barely used and is in great shape. I just want to be able to master so I can burn a cd of a live set. Any help would be greatly appreciated !