Receiving a Function warning after converting VB.net for VS 2003 to VS 2005.

I am converting a project that I was working on in VS 2003 but after I converted this project to VS 2005 I get the following error:

"Function 'selAllOrgMembers' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used."

Here is the function.

    Public Function selAllOrgMembers() As SqlDataAdapter
        Try
            Dim cmdAllOrgMembers As New SqlCommand("selAllOrgMembers", objConn)
            cmdAllOrgMembers.CommandType = CommandType.StoredProcedure
            objConn.Open()
            cmdAllOrgMembers.ExecuteNonQuery()
            objConn.Close()
            selAllOrgMembers = New SqlDataAdapter(cmdAllOrgMembers)
        Catch ex As SqlException
            MsgBox(ex.Message)
        End Try
    End Function

When I run this it works fine.  I am just trying to eliminate all the warnings I have and clean up my code.

How would I fix this warning that I am getting?

Thanks