Avid MBox 2 - Stops working in El Capitan
If you use an Avid MBOX 2 USB Audio Interface, DO NOT UPGRADE TO EL CAPITAN.
The device drivers will no longer load:
10/5/15 9:40:44.399 PM com.apple.kextd[53]: Untrusted kexts are not allowed
10/5/15 9:40:44.399 PM com.apple.kextd[53]: ERROR: invalid signature for com.digidesign.mbox2.driver, will not load
The MBOX 2 worked perfectly in Yosemite.. I'll be downgrading ASAP...
MacBook Pro, OS X Yosemite (10.10.4), Early 2011