PT 11: Crazy random volume boost, track muting, and cliping

[sharchik]

Hey guys,

I recently opened a recording session from PT 10 in 11 and everything was working fine. Was... working fine.

Now when I press play on a certain beat (This one coincidentally happens to be a marker thats labeled with the songs section) everything mutes except the guitars and guitar sum track i have and the volume on the main output SKYROCKETS up to clipping like crazy.

If i mute that track suddenly the rest fades back into normal playback volume and sounds fine, without guitars of course.

The other weird thing is that if i place my playhead marker before or after this point by say 1 beat and press play, the session plays back as normal.

What could possibly be causing this weird thing to happen?