Last night and last week I selected for photos to be saved on USB and they saved to SD card instead. Why is this happening? Last week I chose to "move" the photos to the USB card and they did move but I also got about 40 "folders" that came also. All the folders had Chinese characters for the file name and show (0) at the end where the number of files would be. I can't delete these "folders" even if I insert the SD card into my computer. How do I get rid of these garbage folders?