Thanks notcloudy, I have done all this, even formatted my Mac hard drive, reinstalled my time machine backup, and reinstalled OS X Mountain Lion from the net, then updated to Yosemite. did all the updates. I even tried formatting one WD Passport Studio, and tried connecting externals, docking station again that all worked before upgrading. I am frustrated. Nothing seem to work.
One strange thing though, every time I upgraded to Yosemite, and my mac restarted, it stopped halfway through. I had to cold start it to get it going again and then Yosemite was installed but no external drives are seen, only powered up. But on the WD passport Studios, the drive is spinning but the indicator light does not glow. Strange? It works only with USB and I can't edit like that.
I need to edit a film and are desperate, need to get the firewire working. What else folks? Marius