OK. I checked MoveableType's support forum and got a pointer to the problem with my upgrade being that there was a problem with my mt-static path definition. I played around with that and my upgrade seems to have proceeded. Of course, the proof in the pudding is whether my blog actually functions correctly. Right now I'm trying to post the entry you are reading. The fact that you are reading it means that it worked. Clearly, if it did not work, you wouldn't be able to read this. Here goes!