MRCC Freezes if USB-powered Polyend Tracker turned off

[DevNull]

For anyone else who goes looking for a solution for a similar issue, the problem just went away.  I took the Tracker out of my music-desk setup for a few days and was playing with it solo, and then upon connecting it back to the MRCC via USB to continue testing the problem isn't there any more.  I didn't change anything in my power cabling or anything else that is connected to the MRCC

/shrug