Project using MOTU Mach 5 plug-in won't load

:

I still have no clues as to what was going on, but I did find a way to get around this issue:

  1. Create a new unassigned MIDI track within the project in Cubase Pro 8 (Having just saved it in Cubase 7.5, which allows it to open in Cubase Pro 8)
  2. transfer all the parts from the Instrument track containing the Mach 5 plug-in to the new MIDI track
  3. Delete the Instrument track
  4. Assign the Mach 5 plug-in as a rack instrument (instead of an instrument track as before)
  5. Assign the newly created MIDI track to the rack instrument version of the Mach 5 plug-in
  6. Make sure everything plays back as before
  7. Save the project
  8. Close the project (or quit)
  9. Open the project successfully. (Here’s where everything went wrong before)

By the way, I’m hardly a newby. I’ve been using Cubase professionally since it’s inception in 1989. This is the first time I’ve had a project not load! Since the project would no longer open at all in Cubase Pro 8, had I not had older Cubase versions and not been able to open it in Cubase 7.5, this project would have been toast! Weeks of work would have been down the drain, the client would have fired me, and I would probably hence forth be out of business! Very serious stuff this is :exclamation: Now I’ll see what happens going forward. Keeping fingers crossed!