I've been there and already done that hoping that maybe they'd updated the manuals that came with the units but mine are the 1.3mp cameras and they don't have that manual there. I do still have theinstruction manualsthat came with the cameras and have gone over and over them step by step and read them over and over again not to mention that I've had this model of camera for several years and used them extensively and am still having the same problems. I would think that whatever I was doing to the new cards, I would be doing the same with the old cards and the old ones work every time. I'm thinking maybe the new cards got ruined somehow going through the mail (maybex-rays or magnetism or something). I'm going to go to walmart and buy a new card and try it and see if it does the same thing.That will probably tell me ifit's the cards or the cameras. I just can't imagine all 5 cameras going nuts the same way all at the same time and still working correctly with the old cards. Thanks for the help though.