I am using qtp 11.0 with .net and silverlight addin.
When try to spy qtp is not able to identify any yab in the swfwindow.
If any one have any solution kindly contact me.
Are other objects in your AUT recognized correctly?
Please send details of the problematic tab test object.
Also, check if you have all the relevant QTP patches in place: http://support.openview.hp.com/selfsolve/document/KM934172