I've had the same message a few times. It's always been when I've accidentally tried uploading photos that were more than 48 hours old - either because I'd been using external upload software and forgot to set it to stock (when I had previously been uploading news), or because I was just a bit slow, and thought I was within the 48 hour limit, but had actually just missed it. Other than that, I think filling in all the IPTC data is very important in the 'file info' section, with your name, keywords, captions etc. If you don't put enough keywords into the file info, that could stop it from being accepted. The wording is just standard on all their rejects. It sounds like the event was very newsworthy, so assuming you uploaded quickly, I'd have a look at whether your IPTC data is comprehensive enough. Good luck with your future submissions! By the way, I've just been knocked off Live News - I guess they didn't think that much of my UK Weather submissions. I now have to apply to be a Live News contributor, and so far, my application submitted about a week ago, has not been responded to. On social media, they've been encouraging weather pictures, saying "weather is always in the news - post your weather pictures". I guess they're having a rethink!