Make sure that you click on additional options. I would go ahead & reduce them to about 800 x 700 size. It will take a minute for them to load.If you're trying to post an unaccepted type of pic it will let you know. The only time I've had that message was if I got logged out because of time, then logged back in & tried to back up & repost it. It wouldn't do it, you have to retype everything.