Hi, I'm here to help with your issue. A couple of questions first.
Do you have the latest Microsoft Visual C++?
It your Netframwork updated?
What operating system are you on? (Windows XP, Windows 7, Unbuntu, Fedora, Mac OS X, Etc.)
Do you have the skin feature for ygopro?
In your system.conf file, do you have use_skin set to 1 or use_d3d set to 1?
Have you attempted to add any cards to the game yourself?
~Jack
Go here to vote for the next cards in Jackpro 1.5:
http://www.tehmadhouse.tk Youtube:
http://www.youtube.com/user/jackmoonward