"Error sending selection to Soundtrack Pro"

Running FCP 5.0.4 on G5 Power PC, and STP 1.0. 5 GB Ram, 100's of GB hard drive space.

When I go to File>Send to>Soundtrack Pro Multitrack Project, a small window pops up saying "Error sending selection to Soundtrack Pro."

Have trashed preferences for both FCP and STP, repaired disk permissions, reloaded FCP.

Any suggestions would be most valued. Thanks - Michael Singh