Hi wiliam,
I don't know if you already solved the Problem since the thread is already open for a while.
Try to find out which Mac configuration your Ozmosis uses. You can do that with Ozmosis Toolbox. If you use MacPro 6,1 or iMac 15,1 or newer you could try patching your AppleGraphicsControl.kex via this Tool: AGDPFix.app.
Regards
Thanks for you reply,I used a iMac17.1 config and I've already patch the kext. the webdriver still can't be loaded.