Error while Creating cs file from wsdl file

Question

Hi,
    I am new to C# and webservices. We have a wsdl file from which I want to create a web service client in C#. For this I use the wsdl tool provided by Microsoft. While doing this, I get an error saying

"Error: Unable to cast object of type 'System.Xml.XmlElement' to type 'System.Web.Services.Description.ServiceDescriptionFormatExtension'."

As the code is proprietory, I cannot share it.

Can anybody help me out of this.

Thanks,
Mani