I did the upgrade ? patch ? from MM25 1.3.84
as an upgrade install , when in the MIDI Editor , it would close to desktop , then automatically re-launch ! un-usable .
I did a clean install of MM27.0.0.16 . it didn't crash anymore , however , while in the MIDI Editor ,... press space bar to stop , and soon , more notes of the MIDI time line would start playing , even from other Tracks\instruments . What ? this is un-usable .
so , back to version mm25.1.2.78 2018 Premium . buying 2019 would have been pointless .
I don't do loops , so I have no comment on using loops with 2019 .