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Most trail cams have an option to delete photos, this also usually formats the card to the camera. Putting a card in any of the readers you mentioned will add a format folder for that device, and these folders may be what is causing your issue. Insert new empty card, select delete photos in your setup menu, then go through and check all your settings. I have seen before when the batteries are removed it goes back to default settings, and needs to be reset to desired settings. Hope this helps.Brandon