walmart sucks

i have always got my pictures devloped at walmart,they came out with this new disposable camera you can buy and the price of the camera includes the prints and cd free of charge. every single time i have gone to pick up the prints and cd, i take the cd put it in my computer and it is blank! this happens evertime and this isn't in just one city it has happened in medicine hat alberta ,regina saskachewan and now again in winnipeg are they incapable? ugh