Which interface do you use? I had an issue with a fully functional MIDI interface that failed to transfer SysEx data properly. Then I bought the TM-1 and the problem was sorted out… Some interfaces just have some trouble with the MnM and there is no solution.
Nothing I tried in C6 with my E-MU 2x2 would work when updating 1.32B. The trick for me was not to use C6 and find a different SysEx program. (I ended up using MIDI-OX)
I don’t have a lot of respect for Elektron’s C6.exe
ps - I’ve loaned my TM-1 and MD UW to a friend, he’s not answering email anymore…