Is there something wrong with the rune forge? I have been trying to a some runes to now avail. I keep getting this message " A problem was encountered while sacrificing the rune. Please try again later."
Possibly the rune your trying to sac is still in a Battle Group. Try removing it from all BG's it's in. Easy way is to put the rune up for trade if it's in multiple decks or if your sac'n stuff from one of the 5k gold store decks just delete the deck from the Rune Manager first...
It's that picture next to your name, you know, your "muscley-man" Avatar, that's the problem. Get rid of that, and the forge will probably work better. (Maybe)
Yes change your avatar to that of an old hobo with a walking stick that will surely help ^^ or better yet to a cool cat in a smoking jacket...