According to Apple, OS X 10.9.5 includes heightened security measures that will also be part of OS X 10.10. These security measures will affect some TASCAM audio interfaces, so users are advised to be aware, and hold off on updating until further information is available
These products use Apple's built in CoreAudio driver. The Settings Panel installer is fully compliant with Apple's latest security measures.
The latest drivers are compliant, but testing is ongoing for these products:
The OS X 10.9 public beta drivers can continue to be used for these interfaces:
Cannot be used with the current driver (public or beta):