This may be related to a couple of different problems. Please launch Hallmark Card Studio 2006 and verify you are showing the following on the left-hand side of the main screen:
If all the buttons show like the above, please follow the directions found in this article:
When printing the second page of a card, the program crashes. How can I print out the completed project? (KB040180)
If only the Birthday button is showing, please follow the directions found in this article:
Showing only Birthday button on main screen/crashing when printing in Hallmark Card Studio 2006. (KB040032)