You can help our tech support agents to help you better by providing us with your Mac's System Profile when you submit a support request. The System Profile is most helpful when your PreSonus hardware is connected to your Mac while you're creating the profile -- so be sure to do that.
OS X 10.10 Yosemite
Click:
> About This Mac > System Report
File > Save
OS X 10.7 Lion, 10.8 Mountain Lion, 10.9 Mavericks
Click:
> About this Mac > More Info > System Report
File > Save