I've been working on my ald velothi mod. and a put a wall all around the place. however it bisects a pathgrid. and while i can load it in the cs. anytime i go near it ingame i get a CTD. Could that be the problem? And if so is it possible to delete sections of pathgrid to clear it.(been modding a while, but never messed with those buggers) the one slavehunter in the pathgrid there has about 4 blue sqaures on him.

The Pathgrid is not causing the CTD.
Placing statics on top Pathgrids does nothing bad, except NPCs will likely get stuck trying to walk into the object.

But yes, you can move the blue spots around to re-shape the path, or delete unnecessary ones.
You select/delete/move them just like any other object in the CS.

thanks Pluto. That is one less worry. I'll figure out what else could have gone wrong and nail the problem to the wall eventually. I think i will try my hand at popping the pathgrids around. just to keep people from being stuck at least.