I got a weird one too Conley last night. I tried to open a project in X3 that was done in X2. It won't even load, crashes and creates a crash report...which I sent and asked for a status update on....so we'll see what happens.
The weird thing about it after doing some experimenting, the project opens in X3 x64 but will not open in X3 32 bit. It opens in all other versions of Sonar too...so it's definitely not corrupt, but X3 32 bit is definitely seeing something it doesn't like. I didn't get any missing audio messages though. Are you not even getting a chance to send in a crash report from the Sonar application? It just completely shuts down before it gets to that? If that's the case, it may be a good idea to contact tech support or maybe pm one of the bakers. If you get one of them, maybe they can check out the project you have and see if they can find out why it's crashing. That's the only thing I can suggest.
-Danny