Reporting Services Exception

Hello,

I have written a C# Web Application and i am using reporting services for the reports but when I access the reports from the web application, it throws the following exception.

System.Web.Services.Protocols.SoapException: The operation you are attempting on item '/TestReport' is not applicable to this item type.

Microsoft.ReportingServices.Diagnostics.Utilities.RSException: The operation you are attempting on item '/TestReport' is not applicable to this item type.

Microsoft.ReportingServices.Diagnostics.Utilities.WrongItemTypeException: The operation you are attempting on item '/TestReport' is not applicable to this item type. at Microsoft.ReportingServices.Library.RSService.EnsureItemType(ItemType actualType, ItemType expectedType1, ItemType expectedType2, String path) .........................................

I made sure Reporting Services are running, tried the following to make sure Reporting Services work.
http://localhost/Reports
http://localhost/Reportserver

Your help will be highly appreciated,
Rithesh