Have you tried checking to see what file type your are trying to upload? I think they prefer .jpeg here. Any file you have will have some type of file extension added to it it's after the name of your picuture, graphic or whatever it will have a . (dot) then the extension for example flower.jpeg, or flower.gif, or flower.psp etc. etc. Some files are too large as well, you may want to check the size so that it's not too large. And other than that, I am not sure what else I can help with but maybe someone else can if this doesn't work for you.