Native Instruments has today urged users of Mac OS 10.9 and 10.10 (Mavericks and Yosemite) who also use some of the company’s older hardware (namely the Traktor Kontrol S4 Mk1, Audio 2 DJ, Audio 4 DJ and Audio 8 DJ) to update their drivers.
The company has identified an issue which caused the above combinations of hardware and software to occasionally disconnect in use, and so is strongly recommending the driver update to ensure best possible hardware performance. The update is not required for OSX 10.8 or below.
What to do next
You can go straight to the download page for you device if you think this issue will affect you by clicking the device name in the list above.