NPC ignoring navmesh?

[mwpeck]

So here's the story....I added a bridge across a small stream in an external cell, then navmeshed over the bridge and cleaned it up so the navmesh went under the bridge but not through the bridge. I finalize the navmesh and load the esp in-game, everything works perfectly, I drag my follower across the bridge both ways on both sides of the bridge to ensure she can get across and she has no issues.

 

I go back into the creation kit, tweak the navmesh in some adjacent cells that come nowhere close to the earlier area, and decide to do some balance optimization, cover generation, error checks and finalize once I make sure everything still looks okay.

 

Back in game I go, and now all of a sudden my follow refuses to cross the bridge. She gets to the first small area of the bridge, then attempts to run off the side onto the adjacent ground, only to be blocked by the wall of the bridge. I run all the way across the bridge and she runs off the bridge, around it, through the water and up to me. She does this both directions on both sides of the bridge. I tried placing her at my character in the middle of the bridge, then continuing to either side of the bridge and she runs off the bridge in the opposite direction, through the water, over to me.

 

I have since deleted the entire navmesh over the bridge, in the water next to the bridge, and a bit around the edges of bridge and re-created it from scratch, finalized it (without all the other steps) and she still does not cross the bridge.

 

Any ideas what I'm doing wrong? Short of starting over with a new ESP and not running any error checks or cover generation I can't think of any way to fix it or even find out really why the game is behaving this way.

[mwpeck]

Anyone have any ideas or things to check that might help?

[rayjames06]

If you have any other mods installed that add to the exterior of skyrim, say a house mod or something like that, you have to go to the area you are working on in that plugin and delete the navmesh or any obstacles that are in the same area as your current project. If you didn't do that and run both plugins the game would see two sets of navmesh causing the npc to basically run in circles or not cross when it reached that point.

Edited August 6, 2015 by rayjames06