Havent tried it out yet. But why does some of the code compile in a december build but not some of the newer ones. wouldnt it make more sense if it would still work. or at least a few months in between.
They moved all of the useful native code out of UTGame and into the UDKBase package (or is it UDKGame .. i can never remember unless i'm looking at it). lots of reorganization of things, mostly for the good. Shouldn't be too difficult to get it all working.