Thanks for that LUK!
When we were testing PgcEdit's ISO making, we wondered what was in the MDS file - as your advice was to select it in preference to the ISO - and how we might create an MDS from PgcEdit.
In practice, the absence of an MDS has not been a bad thing for both SL and DL burns (at least for me).
What exactly is in it, if I may ask?
Regards