Looks like the burn is failing on lead-in. This is an odd bug that gets triggered only by certain burning apps.
1/ Did you get problems before the crossflash? The last time I checked (which was 6 months ago, so I could be out-of-date on this), this lead-in bug affected only 53S firmwares and not 33S firmwares.
2/ Can you burn with another application? CD-DVD Speed can be used to burn ISOs (if you know where to look in the options ), and I've never seen CD-DVD Speed get snagged by this bug.
3/ This is unrelated and is not the cause of your problems, but why did you do a learned media reset when you crossflashed to the 53S? LMR, because it might sometimes cause more problems than it solves, should only be used when necessary.
Edit: And generally, bumping a thread after only 3 hours is a little excessive.