GMOD 13 Workshop doesn't work

I’ve recently gotten into Gmod again and started up the 13 beta. When I want to download an addon, I click open workshop and subscribe to one. Nothing happens. Even when I restart the game, there’s nothing coming up. Does anyone have any clues? Could it be because it’s thinking that it’s normal GMOD, not 13? I have both installed.

[editline]26th February 2013[/editline]

Please delete/lock this thread. I had not realized 13 came out of beta and I was still playing on the beta client.