It's true that the bulk of the discussion has deviated from the specifics of the title.
The reason for the VRS8 discussion taking place here, however, is that the issue with the Quantum and the issue with the VRS8 initially present themselves with identical symptoms.
I can't say with any certainty that the drivers for both interfaces are failing to work on Hackintosh machines for the same exact reason (although that is a possibility), but the steps taken to determine what the issue is with the driver you need to have work will be the same across both (many) interfaces.
It may be a slight sidestep from the title of the thread, but the process outlined up to this point should still provide utility, and there's a good chance that once some consistency is achieved, we will be able to lay out a specific set of steps to troubleshoot/correct this type of problem.