When I get into Keechdachup, Ouralou will not talk to me once he starts following me, thus making it impossible to give the head to the other mongrel and get the crystals. Trying to talk to him yields no result (not even an attack animation), and once he stops following (by me trying to leave the place, for example), his sprite will just freeze there forever and never move or react again. Anybody else had dis issue? I tried reloading an earlier save with no result.

Leaving this here in case someone encounters this bug later: I managed to solve this by loading an even earlier save (before talking to Ouralou for the very first time). Apparently, whatever caused the bug happened during the first conversation with him (before agreeing to giving him nectar) and was saved along with the game data.