Thanks to both of you for the good advice. Through doing some of the above I think the problem is not PowerTracks. I had it working for a while again, turned the keyboard off and back on, and it did not work again. Seems like either the MIDI out from the keyboard is intermittent, or maybe the keyboard needs to hear from the UNO driver on the PC to work. Not sure on that last part.
I wonder if anyone in this forum is using a Yamaha PSR 340. It looks like maybe the MIDI out from the keyboard just does not keep running.
Jeff