我无法在VS 2010或2012中使用“添加服务引用”功能来构建基于ServiceStack的Web服务。我已经按照github上的指南进行操作，包括将ContractNameSpace属性添加到AssemblyInfo.cs文件中，并确保所有DTO都位于相同的命名空间中，但仍然没有成功。相反，我收到了一些构建警告和错误信息，如下所示。
有人能提出任何关于出现问题的建议吗？
有人能提出任何关于出现问题的建议吗？
Warning 1 Custom tool warning: Cannot import wsdl:portType
Detail: An exception was thrown while running a WSDL import extension: System.ServiceModel.Description.DataContractSerializerMessageContractImporter
Error: Schema with target namespace 'http://schemas.servicestack.net/types' could not be found.
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:portType[@name='ISyncReply']
Warning 2 Custom tool warning: Cannot import wsdl:binding
Detail: There was an error importing a wsdl:portType that the wsdl:binding is dependent on.
XPath to wsdl:portType: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:portType[@name='ISyncReply']
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:binding[@name='WSHttpBinding_ISyncReply']
Warning 3 Custom tool warning: Cannot import wsdl:port
Detail: There was an error importing a wsdl:binding that the wsdl:port is dependent on.
XPath to wsdl:binding: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:binding[@name='WSHttpBinding_ISyncReply']
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:service[@name='SyncReply']/wsdl:port[@name='WSHttpBinding_ISyncReply']
Warning 4 Custom tool warning: Cannot import wsdl:portType
Detail: An exception was thrown while running a WSDL import extension: System.ServiceModel.Description.XmlSerializerMessageContractImporter
Error: Schema with target namespace 'http://schemas.servicestack.net/types' could not be found.
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:portType[@name='IOneWay']
Warning 5 Custom tool warning: Cannot import wsdl:binding
Detail: There was an error importing a wsdl:portType that the wsdl:binding is dependent on.
XPath to wsdl:portType: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:portType[@name='IOneWay']
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:binding[@name='WSHttpBinding_IOneWay']
Warning 6 Custom tool warning: Cannot import wsdl:port
Detail: There was an error importing a wsdl:binding that the wsdl:port is dependent on.
XPath to wsdl:binding: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:binding[@name='WSHttpBinding_IOneWay']
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:service[@name='AsyncOneWay']/wsdl:port[@name='WSHttpBinding_IOneWay']
Warning 1 Custom tool warning: Cannot import wsdl:portType
Detail: An exception was thrown while running a WSDL import extension: System.ServiceModel.Description.DataContractSerializerMessageContractImporter
Error: Schema with target namespace 'http://schemas.servicestack.net/types' could not be found.
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:portType[@name='ISyncReply']
Warning 2 Custom tool warning: Cannot import wsdl:binding
Detail: There was an error importing a wsdl:portType that the wsdl:binding is dependent on.
XPath to wsdl:portType: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:portType[@name='ISyncReply']
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:binding[@name='WSHttpBinding_ISyncReply']
Warning 3 Custom tool warning: Cannot import wsdl:port
Detail: There was an error importing a wsdl:binding that the wsdl:port is dependent on.
XPath to wsdl:binding: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:binding[@name='WSHttpBinding_ISyncReply']
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:service[@name='SyncReply']/wsdl:port[@name='WSHttpBinding_ISyncReply']
Warning 4 Custom tool warning: Cannot import wsdl:portType
Detail: An exception was thrown while running a WSDL import extension: System.ServiceModel.Description.XmlSerializerMessageContractImporter
Error: Schema with target namespace 'http://schemas.servicestack.net/types' could not be found.
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:portType[@name='IOneWay']
Warning 5 Custom tool warning: Cannot import wsdl:binding
Detail: There was an error importing a wsdl:portType that the wsdl:binding is dependent on.
XPath to wsdl:portType: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:portType[@name='IOneWay']
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:binding[@name='WSHttpBinding_IOneWay']
Warning 6 Custom tool warning: Cannot import wsdl:port
Detail: There was an error importing a wsdl:binding that the wsdl:port is dependent on.
XPath to wsdl:binding: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:binding[@name='WSHttpBinding_IOneWay']
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://schemas.servicestack.net/types']/wsdl:service[@name='AsyncOneWay']/wsdl:port[@name='WSHttpBinding_IOneWay']