OK, here is how it all started. I put my SD card into the port on my computer and started viewing the pictures. I then selected a certain picture, clicked File > Make A Copy.... Then I selected that the copy be located in the My Pictures folder. Is was created there as a JPEG Image.
However, once I put the SD card back into my camera, I proceeded to view the pictures, but when I get to the one I made a Copy of, it says "File Contains No Image Data" in blue letters against a white background.
So....what happened? Is there any way I can fix it? Can I put a picture from my computer onto my SD card?
The Camera is Nikon Coolpix.
Thank you all so much for any help you can give me!