I created backing tracks for a song in BIAB, dragged the files to GarageBand, and, after fine-tuning attempted to send a wave file to open in BIAB. With other songs created recently, I "normally" would mute the BIAB tracks in the mixer window and play along on my keyboard or horns. Now,I get the following error message:

"There was an error converting /volumes/Band-in-a-Box UltraPAK/applications/Band-in-a-Box/data/TEMPMAIN.WAV to Wave format. The error is: 200334207.

So, none of the garageband enhancements are available when I attempt to hear them in BIAB. Way over my head; help please. Thanks in advance.