Install UC for my Studio 68c (already had it installed for my AudioBox iTwo) update and everything works for 3 months. I can use it to record into Studio One 4 with no problems. From UC app I change the sample rate settings from 48.0 KHz to 192.0KHz. The Studio 68c stops responding and no longer works. It shows up in the UC app but I can no longer change the settings. It doesn't show up in the mac settings anymore and Studio One 4 can no longer find it. I have tried everything from restarting computer to updating drivers and firmware but nothing works. What do I do? I sent it back to PreSonus and they returned it two weeks later saying it is "fixed" but the same issues are present.