This one should fix all the funny hang bugs related to getting to 0 or less MaxHP due to Fusion, Soul Armor, or Brand related changes in Vitality/MaxHP, as well as a couple of other bugs.
Download link in the forum post has been updated: http://forum.ferretdev.org/viewtopic.php?f=8&t=414
Note: Forgot to post it in the change log, but in a related matter, leveling up Vitality no longer previews changes to your MaxHP in real time. (I may be able to fix this later, but wasn’t worth delaying critical fixes for. Previewing things is the worst UI. )