When using Internet Explorer, this might happen. Turning pop-up blockers off or using another browser should fix the problem. To do this in Internet Explorer 10, select Tools|Pop-up Blocker|Turn off Pop-up Blocker.
If you are printing your cards and only getting a partial list, it may be that you have just entered them and have not hit save all. You might also try printing the cards from the Play Games screen (via the Play Games menu selection on the left).