Just to keep everyone updated
I updated to 1.4.5.11 yesterday and after updating and calibrating, I played around and troubleshot for a few hours. I got one dropped voice in my session. Thankfully (for me), it wasn't when my Octatrack was connected so I can stop wondering if there's some voodoo coming from there. I had built 2 extremely basic midi tracks in ableton (one on channel 2 and one on channel 10) and was sending them to my Tempest. The midi line didn't cause any issues, but a few minutes later when I was just noodling around through my beats I had a voice drop (not the midi voices).
The interesting thing is that I had been playing around in and out of this set already for an hour with no drops, but once I switched from using a straight USB cable to one of those usb/midi combos cables, I had that drop withing a few minutes. Could be a coincidence I guess, but I thought using the hardware midi in jack on my Tempest would be a closer representation of how my actual set up is. No clock or cc was being sent, sequencer not running.
For anyone else that is still getting voice drops - do you have a midi cable plugged in (as oppose to usb)? Or for those of you that haven't got any on 1.4.5.11, are you using the midi in jack?