Help with weapon spawning

Hi I was wondering why people can spawn CSS weapons… I have a zombrp server and people can simply go into weapons tab and start spawning CSS weapons… Anyone know how to stop this?
I have Assmod,ulx and simple admin installed into my server

Yeah I have the same problem. T_T
Happend as soon as I installed CS:S models.

Anyone know what the name of the file that needs to be deleted to fix this is?

->change to admin/super admin only