Bug - Trigger
In the quest "Another crazed mage", there is a random rat outside the door - if it enters before you, as you open the door, it triggers the NPC, not you, resulting in the NPC never talking to you.
I suspect that this can happen with any background NPC + floor triggers.
Content - Smelling & Grammer
In Black Cove, the item "Piratcy Notes" is spelt incorrectly, should read: "Piracy Notes".
