I am more worried about the fact that all the builds after Dec 13th crash my 3dsmax at time of collection of extra passes at the end of the dr rendering phase, and the light mixer and post effects spinners have no effect midway of the dr rendering. so for 100 passes, at around 50 spinners don't have an effect, and as soon as the number hits 100 max crashes, this is still happening with the latest build and at work and at home. it doesn't happen when you render a couch alone, but if you render a real project it happens. I would say memory leakage or permissions to copy stuff over the network.
this whole problem goes away as soon as I reinstall 1.5.2 and copy the dec 13th update.