Ошибка: невозможно создать временный класс (результат = 1) ... при вызове методов в веб-службе. Я использую VS 2008 C # ASP.NET 3.5. Я вызываю удаленный веб-сервис для моего приложения.

Server Error in '/' Application.
Server was unable to process request. ---> Unable to generate a temporary class (result=1).
error CS2001: Source file 'C:\WINDOWS\TEMP\6sbkwt2d.0.cs' could not be found
error CS2008: No inputs specified
 Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

 Exception Details: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> Unable to generate a temporary class (result=1).
error CS2001: Source file 'C:\WINDOWS\TEMP\6sbkwt2d.0.cs' could not be found
error CS2008: No inputs specified


Source Error: 

Line 775:        [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/CheckLogin", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
Line 776:        public System.Data.DataSet CheckLogin(string uname, string pswd) {
Line 777:            object[] results = this.Invoke("CheckLogin", new object[] {
Line 778:                        uname,
Line 779:                        pswd});


 Source File:  c:\windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\14127ae4\96323535\App_WebReferences.u9ldrmk1.0.cs    Line:  777