Everything else is fine on my map. I spent a lot of time creating it and when i load it, i have no weapons that i can use except from grenades. Also the wallguns are super bright and appear as squares

you had to of messed with share/raw/scripts  and by changing them you caused this. I'm not sure what all you have messed with but by default you should have a pistol and wall buys are fine. I can't really say for sure what you would need to change, but I would start by checking _zm_weapons.gsc located in share/raw/scripts