One more idea. Thats why I've spent a sleepless night - after entering License Numbers - Clear your browser cache, or try using another browser ! I'm not sure how and why, but it seems like in Firefox i had a situation where i've been given an "This widget is not registered" , when in IE (same time) everything was fine . After I cleared cache- everything was fine . (Except that i couldn't see the buttons in Vidoe Player :)