I have an unhandled exception in arcgis programming

[man75]

I am going to create a website and load a gis map to it.I am using arcgis 10 and I created a web application in arcgis server 10I created a new WebSite in Visual Studio 2010 and add a map resource manager.And add a \[code\]MapResourceItem\[/code\] for this.After that add a map control and set \[code\]MapResourceManager\[/code\] property.I config \[code\]ArcGISIdentity\[/code\] too.But unfortunately when I run application occurs this error :\[quote\] Error processing server request [SoapException: Error processing server request] System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) +4159 System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) +328 ESRI.ArcGIS.ADF.ArcGISServer.MapServerProxy.ComputeScale(MapDescription MapDescription, ImageDisplay MapImageDisplay) +117 ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapFunctionality.GetScale(Envelope extent, Int32 mapWidth, Int32 mapHeight) +564 ESRI.ArcGIS.ADF.Web.UI.WebControls.Map.get_Scale() +794 ESRI.ArcGIS.ADF.Web.UI.WebControls.Map.setExtent(Envelope value, Boolean addSetExtentCallbackResult) +2556 ESRI.ArcGIS.ADF.Web.UI.WebControls.Map.set_Extent(Envelope value) +39 ESRI.ArcGIS.ADF.Web.UI.WebControls.Map.validatePrimaryMapResource() +2586 ESRI.ArcGIS.ADF.Web.UI.WebControls.Map._OnLoad(EventArgs e) +115 ESRI.ArcGIS.ADF.Web.UI.WebControls.Map.OnLoad(EventArgs e) +37 System.Web.UI.Control.LoadRecursive() +134 System.Web.UI.Control.LoadRecursive() +232 System.Web.UI.Control.LoadRecursive() +232 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3412\[/quote\]Thanks for help me.