处理SOAP响应时出现XML Parse错误

I am using C# .Net 2.0 to write a webservices client. The server's soap implementation is tested and is pretty solid. gSoap/C++ applications had no problem reading the responses. However the .Net implementation complains "There is an error in XML document" while calling one of the methods. Similar responses recieved from the server were happily processed by the xml parser. I am using C# .Net 2.0 to write a webservices c