The Drunken Lizard Pub

So I got the quest, got the acorn, returned to the quest giver but he appears to be hostile now. Maybe I took something of his and didn't notice the notification? Will this go away or will he refuse to speak to me forever? Is there anything I can do?

You can turn hostile NPCs friendly again with the Charm spell - hit them with it, wait for it to wear off, then talk to them as normal. There's also a Charm potion in Book II, but I believe not in Book I.

You can also potentially delete the map file where the NPC is from your save game folder. Then when you go to load your game, you'll get a fresh copy of the map. Depending on what else is on the map, that can sometimes lead to other unexpected consequences, and is not officially supported in any way.

Thank you! Being a fighter I did not have the charm spell but the map file trick worked. I had to kill a couple blackwater guards to get back into town but I was able to complete the quest so far seemingly without other issues. Appreciate it.