[Sorry for bad english] I've made a stair going down and there's a door separating these 2 areas, when you go down u enter area 4, it was working fine, but the zombies don't follow me when I go down, I read some forums and I've checked "dynamic_path" (but it gives me an error "limit of distant paths, something like that"), i've put pathnodes 100 times and it does not work, if I uncheck it works, but the zombies don't follow me down...

The door is activated by a script, I don't know if that changes something or not, please help 

[sorry for english]

Show a screenshot of the path nodes in Radiant.

http://i.imgur.com/RMPuAzh.png
http://i.imgur.com/jYiF4xM.png

My friend did this on his map and it's working perfectly fine

1st. Too many pathnodes, you can take half out easily, even more possibly
2nd. In script, do you have this:

ent connectpaths();

2 rows on stairs is fine, but like Hitman said there are waaay too many there. I'd be surprised if you didn't get warnings on compile about those since they look like they are touching.

I tried and nothing worked, reduced (a LOT) the paths, added the connectpaths() and nothing solved the problem, any more ideas? I'll backup and start that area again... Thank for the help anyway