Mackie MCU Pro & XT fix
Logic Pro X continually forgot what control surface was attached. Even in the middle of a session.
Looking at the MCU manual I noticed the midi port #2 is labeled as "main" on the MCU.
I had connected the USB on MCU to computer and the XT Pro to port #2 "main"
Moved the XT Pro to port #3.
Deleted all references to control surfaces and re-setup.
So far, fingers crossed, everything seems to be working fine. 3 projects and 5 hours later.
I did not have midi cables long enough or I might also have tried plugin the MCU midi #2 "main" into the midi ports on my audio interface and not use the MCU USB port.
Hope this helps anyone having the same problems.
Later,
Duff