Losing ONLY a portion of soundtrack on a burned DVD - very weird...

I had a contract for 4 different DVDs of 2 hours each. The 3 first ones were simply perfect but the 4th one came back with something weird...

A 2 hour movie is built with FCPX, and chapters are set on Compressor 4. Till then, it works like a charm. Then I build a DVD using iDVD and almost everything works, chapters..., but I totally lose the soundtrack about 2 minutes before the end. 😕

The movie is perfect (as well as the sound) for watching it on FCPX, on Compressor or iDVD but if I look at it once a DVD is burned or once a DiskImage is created, the sound is disappearing about 2 minutes before the end.

Does anyone have any idea about how to get this problem fixed??

Thanx a lot

😀