Thanks. And that could be one of two problems:
A) You may not have downloaded the current version of the map's navmesh (it has to be manually installed since the map has a preexisting one which means me giving you one via the addon will simply be cancelled out and ignored, but manually installing one will inform the game to use the manually-installed one instead)
or B) Something is wrong with the navmesh I made.

Which barricade are you having trouble with? That may help narrow it down a bit

This config is really good. Only complaint is that the zombies have issues spawning in, and seem to prefer standing behind the barriers unless you walk up to them