Hi all,
After a few years faithful service (running Android), my TouchPad has finally stopped altogether, leaving me with a surplus TouchStone charging dock.  If anyone still has a working TouchPad, and would like a charging dock, I'll happily send it off to someone free-of-charge.  I can only assume it is still working, as I have nothing left to test it on.  The TouchPad is no longer charging off either this or the direct power cable, so I'd imagine that the TouchStone is still OK.