MIDI device gets duplicated in Audio-MIDI setup SOLVED

[philbrown]

This is a really old issue I've run into again. I've been using USB connections on all my gear but decided to dust off my MIDI Time Piece AV to hook up a non-USB device. The MIDI interface gets created in the MIDI window of Audio-MIDI setup in OS X. Everything's fine and works fine. The next day on restart the MTPAV is grayed out and now a new one- MTPAV #2 is active, so whatever I programmed yesterday to aim at the MTP now no longer works. I remember running into this a lot when I was using MIDI more. I was surprised to see this still cropping up as an issue. I had updated MIDI drivers about a year ago when I went to Sierra and updated again this morning after I ran into this. There's a chance that may fix it but I'm skeptical since it's such a long standing issue.

Has anyone found a solution to this or a cause of it?

[bayswater]

I had this happen until I stopped using MOTU MIDI devices. But it didn't actually stop anything from working. Haven't seen it with other devices.

[RROY]

Changing the battery in my MTP-AV stopped the duplication thing happening for me.

[mikehalloran]

Changing the battery in my MTP-AV stopped the duplication thing happening for me.

Yep. Me too.

[philbrown]

Changing the battery in my MTP-AV stopped the duplication thing happening for me.

Yep. Me too.

I changed the battery a few years ago. Maybe its time again. Thanks everyone.

EDIT: 2 screws - that was easy. The battery had a bit of a bulge to it, so that was likely the problem.

[philbrown]

Same thing the next day after updating MIDI drivers and putting in a new battery.

EDIT: I'm not holding my breath on this ancient bug, but I put a Techlink in anyway.

[MIDI Life Crisis]

I seem to recall from a MOTU phone call on the matter (i.e. - me too) that the "trick" is the order things are shut down. I think it was a matter of powering down the device and any MIDI routers before quitting DP. Maybe the reverse but I think it's as stated above. Hope that helps. If I can find my only thread from years ago I'll post it here.

[philbrown]

I seem to recall from a MOTU phone call on the matter (i.e. - me too) that the "trick" is the order things are shut down. I think it was a matter of powering down the device and any MIDI routers before quitting DP. Maybe the reverse but I think it's as stated above. Hope that helps. If I can find my only thread from years ago I'll post it here.

Thanks. If you remembered maybe someone at MOTU will know the specifics. I have 2 other interfaces to try in the meantime, a Fastlane and a Micro-something - don't remember the exact name. Can't believe the Fastlane is still in production. I've had that thing for many many years.

[MIDI Life Crisis]

I did find a thread with a similar problem. Bundles!

viewtopic.php?p=221671#p221671

[philbrown]

I did find a thread with a similar problem. Bundles!

viewtopic.php?p=221671#p221671

Thanks for looking that up MLC. I've never imported bundles in DP, but more importantly I wasn't even using DP when this happened - I was using another pgm called Numerology with my modular synth. Tech support thinks it's the battery even though I just put a brand new battery in it. They gave me some steps to try.

I'm going to try my ancient Fastlane interface and see what happens and I also have a Microlite.

[philbrown]

MOTU tech support suggested that I create a new configuration in the AMS MIDI window. I'd forgotten you can even do that (It's a pull-down at the top of the window). After several restarts that seems to have solved the issue.