Set up 2 cards for my sister on her 2 DS's and she is having lots of problems with the "white screen" when starting, DS freezing when picking a game and if she gets into a game....it will eventually freezes. This happens on both DSTT cartridges on both DS's. To fix the issue I have tried everything, including 2 new memory cards all formatted by Panasonic......."safely remove hardware".....games folder.....only putting in 5 games.....always problems. ISSUE: I got so frustrated with her that I took the 2 DSTT's home so I could see all the problems myself. If I take the same 2 cartridges and put them in my DS....they work fine. THey start, load and play everytime. I am running 1.15 for anyone that cares. The only thing I can think of is that she is getting bad contacts....how do you fix this? Am I missing something else?