This may be a minor bug - I found that if you have the alchemy skill and you want to make potions, you need to have the character with the skill selected (either individually or as the leader of party). I found this particularly confusing since it doesn't make sense that you can't make potions from within that respective character's inventory, even when they're not selected as party leader. So hopefully that hint will help some of you out making potions.
Audrey
