HL2:DM - Missing 'editor/wireframe'

I checked everything under config settings, and everything is at default, but I get the missing editor/wireframe error every time I try to create a new map.

What exactly does this mean and how do I fix it?

What version of the engine are you using? Im using 2009 and it works completely fine, you might have it set at 2007?

Same for mine, but it’s on 2006 and only 2006.