W00t! The 3D boxes WORK AGAIN!!! FINALLY!!
On the minus side, what the heck happened to the platform behavior's slope handing? Now, when I run something up a slope, it gradually slows down as the slope becomes steeper. Sometimes, if you stop on a slope for a sec and then try to keep going up, you can't, presumably because you don't have enough force to do so. Is this the intended new behavior? Sure it's realistic, and is great in, for instance, a Sonic-like game, but it's a nuisance otherwise. (If this is unintentional, I'll go ahead and file a bug report, but I dunno if it is)