Embedding videos not possible (JS error)

Hi,

I use the latest Version of WordPress, BuddyPress and BP Activity Plus.
I searched the web for a solution but I did not find anything that really could help.

Uploading Videos works with the default wordpress theme.
Then I switched to bp-default. Now the Activity Plus plugin stops working.

Whenever I try to embed a video the preview function works but an empty status update is written. The video is not shown.
After clicking “add video” my firebug console shows an error in http://s.ytimg.com/yts/jsbin/www-embed-player-vflJ4hakx.js
Error-Message: TypeError: Value not an object.
…ntListener=v(a.Jd,a);a.g.destroy=v(a.Hd,a);a.g.getPlayerType=v(a.Id,a);a.g.write…
This is the line that is marked when I click at firebugs error message:
function ak(a){a.o=!1;if(a.P)for(var b in a.k)a.P(b,a.k[b]);a.q=null;a.P=null;for(var c in a.g)a.g[c]=null;a.g.addEventListener=v(a.xb,a);a.g.removeEventListener=v(a.Jd,a);a.g.destroy=v(a.Hd,a);a.g.getPlayerType=v(a.Id,a);a.g.writePlayer=v(a.lb,a);a.g.isReady=v(a.Kd,a)}g.Kd=function(){return this.o};g.Zb=function(){this.g.updateRemoteReceivers&&this.g.updateRemoteReceivers(Zf())};

Does anybody know what’s to do to get activity plus running with the bp-default theme?

Thanks!

Flo

http://wordpress.org/extend/plugins/buddypress-activity-plus/