Mix Recall

I got around to trying out Mix Recall, and I'm having some pretty serious difficulties.

In a fairly large project, every time I tried to recall a mix scene I got a "SONAR has stopped working" message and a Fault Report dialogue.

I tried it out on a simpler project. SONAR kept working, but my audio stopped (RME Fireface UFX interface). I didn't get an Audio Dropout message. Power cycling my interface got the audio back, but obviously this isn't acceptable.

Has anybody else had this problem?