[Nicolas Cruz parker]

I had the same problem trying to mount my hvx on my new mac book pro using a firewire express card.
I had no problem mounting on my Mac Pro with no drivers installed.
I finaly tried mounting via an external HDD connected on my laptop on the FW800 port, and it mounted without any problem.

So DRIVERS ARE NOT NEEDED, FIREWIRE EXPRESS CARD MAY NOT MOUNT HVX 200 HVX 205 on MACBOOK PRO
USE AN EXTERNAL HDD on FW800 port in order to mount your camera