The following is a micro-patch supplied by Stardock's awesome IT guys for those that have already downloaded the full 0.99 and don't want to redownload the 1Gb of stuff for 0.991. If you haven't downloaded 0.99 then this will not work for you.
0.99 to 0.991 patch: https://stardock.cachefly.net/FallenEnchantress-0.991_update_mini_setup.exe
Bugs
The Resoln Water Shrine is no longer 0 labor
Raise Land can't be cast on hills anymore
Crash fixes
Reduced the AI Priority on Summon Imp and Summon Familiar (the ai would cast away all their hit points with them)
Fixed a deadlock condition
Balance
Reduced Wealthy to +800 Gildar (from +1000 gildar)
Increased Waerloga the Dragonborn to level 20 (from 15)
Made the Lightning Pike rare (instead of uncommon) and reduced its attack slightly
AI
AI Managed unit task is now multi-threaded
Improved AI expansion
UI
Fixed lots of typos
