Bflat5
I have found that MODO will work until I import the midi.
If you load an old project w MODO that formerly worked does MODO still work?
If you take an new project, add MODO and manually input MIDI notes (not importing) does MODO keep working?
If so, with your broken project - if you delete all MODO's MIDI data does MODO start to work again?
If answers to all the above are Yes, then there is something in the MIDI you are importing for this project that is causing the issue.