Error "Media Not Found"
This could be due to various reasons:
Make sure the images are JPEG or PNG
Make sure the images are saved in a folder on the SD card called "Photos" or "DCIM"
Make sure the SD Card is formatted to FAT32 (default)
Make sure the SD Card is no larger than 32GB
Make sure the images are no more than 1280 x 800 resolution
Make sure the image files are 5MB or less
20 images maximum