I've been unsuccessful in getting my nexus 7 or 5 for that matter to cooperate in uploading images. Every time I try to load an image such as for Craig's list, I get a message saying failed to open image. Seems like every website I get this error even in forums when I'm trying to add a pic to a thread as attachment. Tried getting the file from documents, drive and camera itself. No luck. Any idea why it doesn't want to cooperate with these files?