And here is one log of the original failure:
I 00:10:53 Operation Started!
I 00:10:53 Building Image Tree...
I 00:10:53 Checking Directory Depth...
I 00:10:53 Calculating Totals...
I 00:10:53 Preparing Image...
E 00:10:59 Unable to find any cells that could be used for the layer break!
E 00:10:59 The layer break must be between sectors 2064192 and 2086912.
E 00:10:59 Sector 2064192 falls within VTS_03 (Title), which starts at sector 890345.
E 00:10:59 Relative to the start of VTS_03 (Title), the layer break must be between sectors 1173847 and 1196567.
E 00:10:59 Relative sector 1173847 falls within PGC 1, Cell 12, which starts at relative sector 1114843.
E 00:10:59 Relative to the start of Cell 12, try splitting between sectors 59004 (115,24 MB) and 81724 (159,62 MB).
E 00:10:59 Operation Failed! - Duration: 00:00:05
I 00:12:27 Close Request Acknowledged
I 00:12:27 Closing Down...
I 00:12:27 Shutting down SPTI...
I 00:12:27 ImgBurn closed!
That is what I changed later but got no layer break info in Imgburn.
ericf