I'm running 12.10 (Beta 2) and I've been unable to mount any of my drives for some time. Whenever I try to mount my Windows partition or my external HDD, I get a message saying:

Could not display "/media/[Username]/[Drive label]".
The location is not a folder.
I've read that there has been a change to how drives are mounted but I'm at a loss as to how I can start using my drives again. Does anyone know how to fix this problem?

Many thanks!