当我尝试向我的 VS2010 项目添加 Web 引用时，我遇到以下错误。（服务运行良好，事实上 VS2010 在查找系统上托管的服务时会自行检测到它）
The document at the url http://localhost/_vti_bin/PPS/PPSAuthoringService.asmx
was not recognized as a known document type.
The error message from each known type may help you fix the problem:
- Report from 'XML Schema' is 'The document format is not recognized
(the content type is 'text/html; char