1. It can't seem to load any models at all that are not built in:Executing Add-Ons/Weapon_Uzi.cs.
Add-Ons/Weapon_Uzi.cs (0): preload failed for uziItem: ShapeBaseData: Couldn't load shape "Add-Ons/shapes/uzi.dts".
Add-Ons/Weapon_Uzi.cs (0): preload failed for uziImage: Unable to load shape: Add-Ons/shapes/uzi.dts.
Executing Add-Ons/Weapon_Sword.cs.
Executing Add-Ons/Weapon_Spear.cs.
Executing Add-Ons/Weapon_SniperRifle.cs.
Add-Ons/Weapon_SniperRifle.cs (0): preload failed for SniperRifleItem: ShapeBaseData: Couldn't load shape "Add-Ons/shapes/SniperRifle.dts".
Add-Ons/Weapon_SniperRifle.cs (0): preload failed for SniperRifleImage: Unable to load shape: Add-Ons/shapes/SniperRifle.dts.
Executing Add-Ons/Weapon_Shotgun.cs.
Executing Add-Ons/Weapon_Gun.cs.
Add-Ons/Weapon_Shotgun.cs (0): preload failed for shotgunItem: ShapeBaseData: Couldn't load shape "Add-Ons/shapes/shotgun.dts".
Add-Ons/Weapon_Shotgun.cs (0): preload failed for shotgunImage: Unable to load shape: Add-Ons/shapes/shotgun.dts.
2. One of your scripts has an error to do with getSubStr();, which appears to be called every second or so:getSubStr(...): error, starting position and desired length must be >= 0: (-1, 1)
Have you installed add-ons correctly, or just the scripts and not model files?