unknown database connector error in crystal report XI

developing web application using visual studio, sql server 2000 and crystal report 11.5, windows 2003 server.
when trying to create a new connection in crystal report getting error : unknown database connector error

create new connection > OLE DB (ADO) > unknown database connector error

Hello,

In order to help you, we are going to need more information than that.

Can you start by explaining the exact steps, including any code, that you use to generate this error?

Gary