Having Trouble Downloading Custom Backgrounds

I’ve tried to download several backgrounds from garrysmod.org, but none of them seem to work, and I’ve tried both dragging them into garrysmod/garrysmod AND into console, but still, nothing works.

Is there something I’m doing wrong? Is something broken in my files? HALP

Are you using a widescreen resolution?

http://www.facepunch.com/threads/1106324-Custom-backgound-s-being-Rejected

Oh! Thanks a bunch.