Trying to update the Nvidia web driver on my 2010 Mac Pro. The pkg. file opens and begins to install but ends with "The installation failed. The installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance." I've already tried repairing permissions and even creating a new administrator account but it doesn't make any difference. This is really frustrating as I'm stuck using the old OS X driver now. Any suggestions would be greatly appreciated.