That's because the size of the jpeg image is too big for the Blurtit format to allow the picture to be uploaded on your profile.You're just going to have to pick a smaller version of it lol.
I just uploaded two pictures to my favorite pictures.. Why cant i see them? All i see is a box with a red x in it!
Unsupported format ? Change the extension , maybe it will work
Because your pictures are too big for them to fit into the box of course.. That happens to me so just make your pictures smaller.