YouTube videos embedded in non-YouTube pages won’t play for me. (I could swear they did when I first installed the ClickToFlash extension.) I must have some setting wrong. Under HTML5 Settings, everything is checked. Initial behavior: Start Buffering. YouTube is not whitelisted. It’s not just that YouTube hasn’t posted the MP4 yet: even old videos fail; and if I go to the YouTube site, the MP4 versions DO play, automatically and painlessly, in ClickToFlash. (I don’t have YouTube set to HTML5.) Embedded videos do show the preview image, in the QuickTime black UI, and then when I mouse to the top-left corner, I see all the ClickToFlash format options, with 360p MP4 selected. I try different formate, MP4 and FLV alike, but none will play. (The Flash option will play, but... my poor fans! I want to stop having to load the Flash version when YouTube has a good MP4 version I could be using.) Thanks in advance for any tips!