I did submit a ticket yesterday because I had 400K go missing. I have had the error you describe many times and never had an issue. And yesterday I did NOT buy anything so but was looking in the AH which is disturbing. It's possible my problem was a bad or mistaken punch of a gateway button but I would swear I was careful…
I didn't get 20 cries but I got enough over one to hurt. And I hurt for every person that didn't the transmute because they wanted Garden access and sacrificed the time to get it on every character. There ought to be a hew and cry on this until it is made right.