So...if you want to post pictures...click on go advanced in the bottom right when you scroll down...then use the manage attachment button to upload them.....i am having trouble with the add picture tab, but the manage attachments worked perfectly.
I had the same problem and, I think with the slow goings around here DC has gone on the cheap and the files need to be re-sized smaller.......
Ok so I just tried and got a red circle also, even on a small file.....131kb