DSTTi with Ds lite problem

The DSTTi workds fine jsut when i try to play a game when it loads it freezes. has this happened to anyone? and how can i fix it?

Take a look through the Common Issues thread.
https://www.romulation.org/forum/index.php?topic=1462.0

this happen to me too. just backup ur files, and reformat it the a different fat