Hi Hanshi and jason

Both of you understood my question wrongly!!!

The error i am getting is not on clicking the OK button. By deafult the path is filled with path "C:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\Backup". Also i am getting error on clicking the browser button used for selecting folder to backup.

I mean on clicking the button having three dots(...) which you can see in image in msdn post.

If you still have doubt pls reply me with doubt