This seems like a simple problem, but I haven't found any sufficient answers through my two hours of scouring the internet! Needless to say, it's driving me a little crazy. It was working just fine less than 24 hours ago!
There is no sound whatsoever coming out of my speakers or headphones (each plugged in to the appropriate ports). Monkey is all updated; green checks everywhere. Output knob and phones knob are at maximum. Input/Output in Mac preferences is set for UX2. I've tried switching out usb cables and trying different ports. Tested headphones and speakers on other devices, they work. The only thing that changed was that I pulled out the usb cable and put it into a usb hub for a moment, then took it out and put it right back into the mac directly (I forgot, no hub with the UX2). Right after that, it stopped working correctly.
Also, when I try to use logic pro X and gearbox, it doesn't register any sound coming from the mic, and when I try to play back something I recorded just a few days ago using the exact same settings, I get this message:
Error while trying to synchronize Audio and MIDI Sample Rate 23482 recognized.