I'm 99% sure it stopped burning when it reached a file which had an accented letter in the filename, 90% sure it was "é" (that's a lower case "E" with a "/" above it, in case it doesn't display right) . The previous time I had the burn problem there were also filnames with accented letters in the list.Burning was not successful: Could not write the image layout to the disk.
No time to check further or install the debug version. But for compatibilty reasons I'd like an option to have lower-ASCII only filnames (replace upper-ASCII with "_" for example).
Ariel.