Can't upload game clips or screenshots to the Xbox network

I have came across an issue when trying to upload a gameclip to the Xbox network. I went to the gameclip that I wanted to upload, I pressed upload and then it went to this screen picture above. After that, the screen quickly turned black and then after a minute or so, it went back to the dashboard. I think it may be something to do with the most recent console update because this wasn't happening before the update.

It's annoying me now that I can't upload screenshots and gameclips. I hope it gets fixed.

:)