No, I stole the horn after he told me to. Is he supposed to be in the docks when I give it to him? Because that would explain a lot of things.
Anyway, I gave up and used the portal.

Quite a simple solution. No cloak of Mirroring for you, my cheater! :D

With 500+ hp I don't need it anyway. :D

I had the problem once of Saemon not appearing in the Docks (not sure if he teleported back to the vulgar monkey, don't remember if I checked it).
http://www.ironworksforum.com/ubb/cg...c;f=2;t=014605
Could be just a random glitch.