Whenever I click the little camera icon on my facebook app for my Verizon iPhone 4 to upload a picture, it takes me to my camera roll and when I select an image and hit "upload" it fades back into the wall screen and no picture is uploaded. When I try it again this message pops up: "Your photo could not be uploaded at this time. You can save this photo and try to upload it again later." Even if I do save it and try later, I still get no luck. Any ideas??