When playing a multiplayer LAN game the spirit chamber and alchemy lab can only be used once then they stop working. The workers do not work in them. In the spirit chamber the pedestals do not go back down (they stay risen). After one use you cannot place any units on them. In the alchemy lab you can only make one potion per cauldron. If you try to make anymore potions, the potion will start to make but then stop and the result of the potion states "unfinished". The unfinished potion will remain on the cauldron and the crackpots refuse to complete them.
Customer support service by UserEcho