Originally Posted by Shadowbart
The ! went away, but he's still not clickable. I had a potion of speak to animals on before I went to bed, if that makes a difference.

It shouldn't. You should always be able to interact with him at camp (with or without the prompt showing and also with or without Speak with Animals active). The difference is just the way the conversation is handled as you cannot have a dialogue with him if you don't have Speak with Animals up.

As for ideas: I find that many "stoppers" can be circumvented by quick-saving, quitting the game and then re-starting/re-loading.