I don't know if this will help out any Craig, but I'm having trouble updating a couple of things. 1 of them is BetterTouch Tool, and the other was the Drivers for AirDisplay from Avatron.
With BTT, everyday i wake up and open the lid, BTT says i have a update, and its ready to install. I look at the .v update, and its always the same update, coming from the 27th Oct, and the AirDisplay is a restart afterwards, and then when i do, and check, it asks me to install the drivers again ??
Im still working on it, but thought i would let you know.