Error when connecting a new database on VS 2010 (1 reply)

I followed steps in : http://dev.mysql.com/doc/refman/5.6/en/connector-net-visual-studio-making-a-connection.html

it fails on step: 21.3. Add Connection Dialog.

when i click the database name field it display a messagebox says: "Unable to retreive list of databases". However if i put a new name on it & click Test Connection an error message occur say: "The system detect an invalid pointer address in attempting to use a pointer argument in a call".

I really have no idea, Please , anyone can help & guid me?