when adding WSDL web service reference.
its important that the service name will not have the name of "service",
that will raise the following error:
C:\Projects\myproject\Web References\typename\Reference.odx(65,5): error X2011: expected 'identifier'
C:\Projects\myproject\Web References\typename\Reference.odx(65,5): error X2016: unexpected token: '{'
<wsdl:service name="service">
<wsdl:port name="SomePort" binding="tns:SomePort">
<soap:address location="http://location..."/>
</wsdl:port>
</wsdl:service>
to fix that just change the service name to be anything else then "service".
in my case i had a .net project that contained all web references.
and was referenced to a BizTalk project