Fixed it... bug in the gravatar plugin...
In Plugins/Gravatar/default.php at line 36, you need to replace :
$Url .= '&default='.urlencode(Asset('http://vanillicon.com/'.md5($User->Name).'.png'));
to
$Url .= '&default='.urlencode(A…
Don't know if it can help cause.... well... mine dosen't work either ;) but I modified your plugin to support oembed functionality so it support well... almost every service "flickr, youtoube, vimeo..."
by the way... how do we write code in the com…