Pictures there but not showing the image

Hello,

Ive got a Kingston data traveler 8g. Ive got a lot of photos on it and only 5 of them will show up and work. The rest are there i can see the jpg images and there size and all the details but the photo wont work when you click on it. meaning ive got a whole lot of images i can click on but no image comes up

please help.

thanks