lightbender, Don't bother the mod builders directly after an upgrade.  They are busy with everything from Real Life and working out what needs to be changed in their mods. They will get to it when they get to it. Give um and break, or you will push them to the point that they won't update. Chill, have a few beers and all will be good. Go kill some greener's with 1.3.1 for awhile longer.