Pulled a "blank" card? See here.
Sometimes you will see that a blank card comes up during pack opening. This is very rare, but it happens when there is a short connection problem between the server and the client, we cannot prevent this, it's just the way the internet is.
This does NOT mean that you lost the card. It still ends up on your roster or your inactive cards list (see here:
http://www.ootpdevelopments.com/boar...d.php?t=300134) although it will take a bit of Sherlock Holmes work to find out which card was actually pulled. You'll notice it though in your card list if it was a good one
Markus