GPS Data Logger Software - BT747

It appears the Mac OS X drivers on Transystem's website for the 860E no longer work with newer versions of MacOS > 10.9.  I've done some digging, and it appears this device uses a Silicon Labs CP210x USB Bridge chip, but the current VCP drivers on their website do not seem to work for the 860E (I do not see the serial devices in /dev anymore).

Has anyone figured out this issue?  I've been trying to get support from Transystem, MTK, and Silicon Labs, but I haven't made any progress.