Uploading to youtube directly requires you to make a google+ account and all that other stuff. Sadly, I still get the same error message regardless. However, you can still upload to Facebook (if you're on ps3), download the match from there and then upload to youtube. I would recommend making a separate Facebook account so you don't annoy your friends/family lol.
lol after a match you know how you have the choice 2 save the replay well when you save it you can go to Main menu>Extras>Spectator>Fight Viewer. when you get to fight viewer you pick a match and then you just hit upload to YouTube and then your done GOOD LUCK:3