Can't open Gift On Steam for Garry's Mod

My friend bought me Garry’s Mod as a gift on Steam. I’m pressing the open gift button and it won’t work. I do it over and over. I’ve logged in and out. What’s the problem?

No need to post twice. Ive already answered in other thread.

Delete clientregistry.blob

Check the email you registered your steam account with, you can retrieve the gift there.