Workshop stuck at "Downloading Preview Images"

Just get’s stuck on this, even after restart. No specific pop-ups or anything in my addons folder.
I downloaded them off Firefox though, because it refused to open the workshop in the ingame browser.

[editline]16th April 2012[/editline]

Swear I was in the GMod 13 section when I posted this, can a mod move it? :~(

mine usually gets stuck doing this for a minute or so, how long are you waiting?

Waited for 2 hours.

Yeah, mine is getting stuck at Downloading Preview Images too, specifically number 52 (I don’t know which image that is). I left Garry’s Mod open for about three hours and nothing changed.