I'm running Mainstage 2.1.3 on a 2.5GHz iMac with 8GB RAM, Synthogy Ivory II and an RME BabyFace. My concert is 2.2MB and has begun crashing randomly when loading or closing, about every 5th time or so. This is the only concert I'm using that is behaving this way. I've tried trashing the mainstage plist files, enabling virtual memory in the EXS preference (currently using about 30 EXS channel strips), and made sure that I'm not using too much system virtual memory. In addition, the CPU meter stays well below 10%. Memory meter is approaching 40%. Attached is my most recent crash log. I'd be most grateful for any insights. Thank you!