Lua Derma Panel Help

I may not be the sharpest tool in the toolbox, but I have no idea why this is happening with my Lua.

The Situation:

My Code:

EDIT: This even happens with copy and pasting the Wiki article code on how to make Derma Panels.

You are trying to launch CLIENT side lua on a SERVER.

Ahh, thanks. How about would I launch it client sided?

lua_openscript_cl

Consider using Luapad or GCompute.

openscript_cl

Thank you guys so much! TCBA.

Also be sure you arent in singleplayer.