I'm having issues submitting these images, and, unlike the last few times, I can't seem to find a way around them, so I'm going to put them in this online gallery. http://imgur.com/a/aitZs
I can't state enough thanks to you and everyone who has participated in donating banners so far! I love seeing new ones posted, they make me smile.
Could you post a screenshot or report what error you seem to be receiving when you try to upload? I'll attempt to alleviate the problem the best I can.