Well, the add-in launches now, with 4.3 ... then I go to the Env. Format tab and configure my fonts (which is what I'm trying to accomplish) but the "Update Configuration" stays grayed out.

Do I need to put something in every field before I can save it even though I don't require any of the other fields? Some fields crash Word, one's I don't need, but I was trying to put something for each tab just to see if the "Update Configuration" box would let me click it at some point.