UR22 and Mavericks 10.9.1

Just got a new MacBook with 10.9.1.
Installed the UR22 1.8.3 driver and get no audio through MainStage 3. MIDI works, built-in drums work, but no audio.

I see a lot of problems somewhat like this on the forum, but mostly noise, latency, etc. Anyone else not getting any sound?

I got a new iMac with 10.9.1 too. A lot of problem found when I use UR 22, noise, latency… Is there any solution for this? Thank you!