For a few weeks now my Youtube widget would display "Error loading" message. I never bothered to try and fix it because it still played videos. So here's what I did to finally fix it in case anyone else is having the same problem/annoyance. 1) Remove the widget (not sure if this is 100% necessary) 2) settings, applications, click "Youtube", clear cache, exit back to home 3) Add the widget back. Viola, no error message.