Weird monster behaviour

[MrCookieh]

Hi guys!

I added a monster in my custom story, and it should patrol (not disappearing, or hallucination). I've placed the monster and its pathnodes.
Everything works fine, but then, the monster walks like an idiot. He runs towards his next pathnode, suddenly stops walking, turn around, runs in the other direction for a half second, turns around again, and follows his pathnodes. What can cause this? My script isn't that advanced, just adding pathnodes to it.

Now a second question: How can I make my monster patrol, so it doesn't disappear when it reached its last pathnode? It should go all pathnodes back to his starting point, and then starts over. This all the time.