I don't know if it will help, but the problem is linked to the interoperability between some clients and WCF webservices that are using<b> includes </b>for nested wsdl and xsd.
<br/>See the interesting link : <a href="http://weblogs.thinktecture.com/cweyer/2007/05/improving-wcf-interoperability-flattening-your-wsdl.html" target="_top" rel="nofollow" link="external">http://weblogs.thinktecture.com/cweyer/2007/05/improving-wcf-interoperability-flattening-your-wsdl.html</a><br/>

        
        
        
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