Deriving a gamemode from sandbox

[LuaMilkshake]

I am trying to build my own gamemode, and I have used the sandbox files, with the
GM.IsSandboxDerived = true

All I have edited is:

GM.Name
GM.Author
GM.Email
GM.Website

And the NoClip hook.

I can post any files you need.

Also, This is what I get in the console:

Registering gamemode '<gamemode_name>' derived from 'base'

Which should say:
Registering gamemode '<gamemode_name>' derived from 'sandbox'

ALSO, none of the CS Lua files are downloading to the client, which is resulting in the gamemode not even registering (I had to rig it up to get the above error about derivation. I have cleared the cache.

[Entoros]

instead of GM.whatever, use this in shared.lua:

DeriveGamemode("sandbox")