How do I fix my TTDS from saying.......

Hey guys, can anyone help me? I want to play Yu-gi-oh! 5d's World Championship 2010 Reverse of Arcadia (U) on my ttds but the loading bar always freezes when it gets close to the end and it says "Rom loading failed, Disk errcode=-81. How can i fix it? I use the latest firmware from filetrip and those files SAY that the Yugioh game FULLY works on ttds'. What can i do?

Format the card.

Like Yoshi said format the card and then when done put Yu-Gi-Oh on the card again. if that doesnt work try an other firmware version.