The pinnacle forums are full of reports like this. As it stands I think you need to get them to issue a fix or refund.
Windows XP, Pinnacle Studio Plus Version 10.7
Prior to initiating Pinnacle Studio Plus; exit all unnecessary software.
Edited camcordings, photos, voice overlay & added music; in preparation to make movie to DVD.
All of foregoing run complete & satisfactory in edit mode, before movie is generated.
After movie is on DVD, attempted playback on PC & two separate DVD players; in every try,have an approximate 15 second silent gap in the middle of background music, but cam clips are visible.
After gap, music picks up again.
Created movie twice to see if "snafu", during initial recording, got same result.
At a loss.