i think its something related to aperture_ai. but if i just load my second map its fine but if i play my first map and go to the end so it loads my 2nd map it says AI disabled when im done loading

Stopped happening to me when I've placed one info_node under the aperture_ai. (Can be placed everywhere.)
I think it's a problem with the turrets not the aperture_ai though.

so, is that what nodes are for?
I've seen them everywhere but had no idea what they were.

info_nodes (and really air_nodes and other AI _node entities) are how the AI knows how to traverse, navigate, and view the world. Since all of the enemies are stationary in Portal they're not used extensively, but if you map for HL2 or other Singleplayer mods, you would need to use them to an extreme extent if you want AI doing anything more than standing still.

Hen7 wrote:
I think it's a problem with the turrets not the aperture_ai though.

im on my second map witch means chamber 5 -.- im not using turrets yet :s but because the only ai thing i got was aperture ai i once tried to remove it then it worked when i changemaped (lolz) .. then i placed it again it still worked then next day it didnt work again..

im using sounds for GLaDOS to talk so i can put sounds together but i need Aperture_AI for security cams...

just place an info_node like hen7 said

Doomsday192 wrote:
just place an info_node like hen7 said

okai but i have to wait til tommorow

The answer is to load level 2 manually, one time. The game doesn't create Node Graphs on changelevels (I mean, map-to-map changelevels).