Hmm. This ouput takes place at the start of the process, before the counter of tunes starts to go up. Correct? Nothing else is produced once the countup is going?

As you saw from the output, EMSC can only deal with Playlists that have less than 133 direct entries, the 134th and on are ignored. At first hand I don't see how this can foul up things other than those entries not being accesible from EMSC (need to check the code when I get home). Certainly shouldn't make the thing crash. But one thing to try, just for testing purposes, would be to break up that top level playlist into parts, such that you dont have any playlist with more than 133 items (which is probably a good idea anyway for the sake of manageability of the music)..