Walmart developed all my "awesome" pics from mardi gras in new orleans one year without problems. The next year, when i was walking around waiting for my 1 hour photos to develop of mardi gras, i saw all the ladies standing around the picture machine making faces and whispering to each other. Then they saw me watching them and they resumed normal ops. when i went to pick up the pictures, there was like 1 photo out of each roll developed, and a little slip that said basically they couldnt develop the pictures. i dont think this correlates to your story too much but lets just say i dont go to walmart for picture developing anymore. Walgreens, on the other hand, had no problem printing my pictures, even after i explained to the girl exactly what was on them and that walmart wouldnt develop them.