When multiple E3 engines are connected together (as part of a shared input VENUE S3L-X system), and at least one E3 engine in the system is connected to a Pro Tools computer, only one of the available E3 engines may be listed twice in the Playback Engine pop-up menu of the connected computer.The Pro Tools | HD Native Thunderbolt driver doesn't load properly after upgrading to Mac OS X Yosemite.
