I found 5 similar topics on MS community, none of them has a working solution:
http://social.msdn.microsoft.com/Forums/en-US/sqltools/thread/50a5a769-3a42-4958-b76f-a5885296bd4a/
http://social.msdn.microsoft.com/Forums/en-US/sqltools/thread/99531920-51ad-4985-8fe6-cf2f33e7fccb
http://social.msdn.microsoft.com/Forums/en-US/sqltools/thread/ade9b4b9-63ef-4639-9be5-d4159b247bac
http://social.msdn.microsoft.com/forums/en-US/sqltools/thread/2b743982-c07e-46d4-83aa-1d29249a75f5
http://social.msdn.microsoft.com/Forums/en-US/sqltools/thread/7e6e7320-1122-41b4-af47-5059936814c4