I just upgraded to Band-In-A-Box 2009 for Mac and I'm encountering a problem when using RealTracks and RealDrums. Whenever I play a track with those features on, I get a message box with the following:

Error: CalcBeatAryAndSaveBT0 got called!

After this, BIAB crashes. Has anybody else experienced this? I'm using a Macbook Pro Core 2 Duo running OSX 10.4.11.

Regards,
Paul