Npcs screwed up on server

On my server, the npcs are walking in place or in T place.

(different then my last thread, this one is only on my server.)

Addons on server:
Adv Dupe
Adv Spawner
Adv SleepnWalk
Assmod
BummieJump
BummieWalk and Speed
Bouyancy Tool
Cinema Helper V.3
DoorSTool
EasyPrescision
GTA4 Vehicles
Hl2weaponitem
Keypad
Laser Stool 2
Light IgnoreZ Fix
ModelManipulator
No Collide World
Multi No Collide
OL Measuring Stick
Paint Remover
PHX3
Ragmorph
Resizer
Sfx
Skinswitcher
SmartSnap
Smart Constraint
Smart Weld
Stacker STool
Unbreakable
VUmod
Weight STool
Wire
Wire model pack 1
Youtube Player

It’s a multiplayer problem that Garry didn’t bother to fix.

I think it has to do with EP1.