I recently purchased a digital surveillance camera and successfully downloaded the pictures that I took the first day. Since then, when I try, the computer says there are no photos to import. But there are!! I can see them and print them out on my Canon photo printer. I want to be able to save them on my computer tho. I use my Nikon digital camera to download by inserting the SD memory card into it as the Mac does not have an SD port. No settings have been changed that I know of.