Yu-Gi-Oh! 5D's Tag Force 5

[fastfrog]

Hi, I have been playing it for a while now but there seems to be a problem which blocks me out from proggressing anymore.
Here is the problem. After Yusei's story ending it freezes right before the Save screen. The Save screen thingy is not the first time, game freezes when you try to save in certain locations but its the first time it actually happened after the story end thus blocking the progress. Done 3 of the main characters stories and 10 of side-chars already so i dont think the problem is a general thing.
I wanted to go %100 on this game but it slapped me in the face with saying no to Yusei ending.

Anyway can anybody confirm the problem or tell me what have i done wrong to cause this?