I have a session I just got from a client. It's the only session I have with this problem, all my other sessions are working fine. If I'm in the arrange window and hit play, it stops after about 1 second. if I close the arrange window, and say, have the audio window open, or any of the Not Audio related environments like clicks and ports and hit play. The song plays fine. It only does not play if any arrange or audio mixer windows are open. It also stops playing if I resize any windows while it's playing. Like I said. Other sessions I'm opening work fine. This is the only one. suggestions?