Just got Uno Pro X and struggled with connection inside Ableton. It worked stand alone but didn't as a plugin inside Ableton. It just stayed on "waiting for connection" state forever.
I made it work but I have no Idea what helped, because now it works every time without any additional steps (I just drag plugin on midi track - earlier today it didn't work, didn't connect).
What I did:
1. Connected Uno Pro X via USB and enabled it in Ableton (as a track - both in and out in midi preferences).
2. Loaded Native Instruments Kontrol on only one midi track that I had (deleted all other tracks). My thinking was that perhaps Kontrol doesn't block connection with Midi outside normal Ableton flow. And loaded Uno Pro X vst3 plugin inside it.
3. It didn't work.
4. But I added additional midi track and set as midi source the track as the track with Kontrol and selected Kontrol plugin (it's a combo where you can select pre, post but if you click, there is Kontrol plugin) and as a send I selected Uno Synth Pro X (that I connected via USB)
5. I added additional midi track that send all midi from UNO Pro X port to the first midi track (I figured that it might help).
6. I opened Komplete plugin and - wow, I started to see loading of presets. It works!
7. But then I thought, perhaps it's not Komplete, but those midi tracks helps. I deleted Komplete plugin and loaded UNO Pro X vst3 plugin on the track, that used to have Komplete plugin on it. And it also works.
8. And here the kicker. I restarted Ableton and loaded the plugin again - I tried to recreate the midi track setup from scratch. But it works now. IDK what happened, but perhaps it might help you guys.
