CMS Widgets configuration issue, grey screen
 

Hi guys, after making a change of server, when i try to configure widgets, i can't.
I go to Admincp -> Vbulletin CMS -> Widgets and when i click in Configure, nothing happens, when i click it again, i get a grey layer oaver that frame. I attach a screen capture.
Attached Images

• http://vb.ma7room.com/jpg.gif widgets_admincp..jpg‎ (37.7 KB)