Walls not showing in game

[DnALANGE]

Be 100% sure it is
1 in your mod, custom story folder and
2 look where the wall is loading from.
also check if the wall works in an other map, just to see if the wall even works.
but you saying it works in another map?
is this a story or full conversion..
is this a custom made wall...
some more info would be apriciated