MY Passport Wifi 1TB no thumb nails

My new My Passport Wireless 1TB is not displaying any jpeg thumb nails. All the files are there and if I click on a single file the images loads up but NO thumb nails at all. Left device of for over an hour then switch off but made no difference. Very anyoning!!!

Hello there,

Does this happen when you have the unit connected via USB or WiFi or perhaps both?