Hi Has anyone got an answer of this problem? It is an intermitten problem and need to restart Reporting Services before it go back well again. Reporting Services 2008R2 running on Win2K. processing!ReportServer_0-10!12c0!12/10/2010-14:29:57:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: , Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: An unexpected error occurred in Report Processing. ---> System.IO.FileLoadException: Could not load file or assembly 'Microsoft.SqlServer.Types, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. Access is denied. File name: 'Microsoft.SqlServer.Types, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.IntermediateFormatReader.ReadVariant(Token token) at Microsoft.ReportingServices.ReportIntermediateFormat.ExpressionInfo.Deserialize(IntermediateFormatReader reader) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.ProcessingRIFObjectCreator.CreateRIFObject(ObjectType objectType, IntermediateFormatReader& context) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.IntermediateFormatReader.ReadRIFObject(Boolean verify) at Microsoft.ReportingServices.ReportIntermediateFormat.ReportQuery.Deserialize(IntermediateFormatReader reader) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.ProcessingRIFObjectCreator.CreateRIFObject(ObjectType objectType, IntermediateFormatReader& context) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.IntermediateFormatReader.ReadRIFObject(Boolean verify) at Microsoft.ReportingServices.ReportIntermediateFormat.DataSetCore.Deserialize(IntermediateFormatReader reader) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.ProcessingRIFObjectCreator.CreateRIFObject(ObjectType objectType, IntermediateFormatReader& context) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.IntermediateFormatReader.ReadRIFObject(Boolean verify) at Microsoft.ReportingServices.ReportIntermediateFormat.DataSet.Deserialize(IntermediateFormatReader reader) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.ProcessingRIFObjectCreator.CreateRIFObject(ObjectType objectType, IntermediateFormatReader& context) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.IntermediateFormatReader.ReadRIFObject(Boolean verify) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.IntermediateFormatReader.ReadGenericListOfRIFObjects[T]() at Microsoft.ReportingServices.ReportIntermediateFormat.DataSource.Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.IPersistable.Deserialize(IntermediateFormatReader reader) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.ProcessingRIFObjectCreator.CreateRIFObject(ObjectType objectType, IntermediateFormatReader& context) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.IntermediateFormatReader.ReadRIFObject(Boolean verify) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.IntermediateFormatReader.ReadGenericListOfRIFObjects[T]() at Microsoft.ReportingServices.ReportIntermediateFormat.Report.Deserialize(IntermediateFormatReader reader) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.ProcessingRIFObjectCreator.CreateRIFObject(ObjectType objectType, IntermediateFormatReader& context) at Microsoft.ReportingServices.ReportIntermediateFormat.Persistence.IntermediateFormatReader.ReadRIFObject(Boolean verify) at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.DeserializeKatmaiReport(IChunkFactory chunkFactory, String chunkName, Boolean keepReferences, GlobalIDOwnerCollection globalIDOwnerCollection, IDOwner parentIDOwner, ReportItem parentReportItem) at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.GetAllDataSources(ICatalogItemContext reportContext, IChunkFactory getCompiledDefinitionFactory, OnDemandSubReportDataSourcesCallback subReportCallback, DataSourceInfoCollection dataSources, DataSetInfoCollection dataSetReferences, Boolean checkIfUsable, ServerDataSourceSettings serverDatasourceSettings, RuntimeDataSourceInfoCollection& allDataSources, RuntimeDataSetInfoCollection& allDataSetReferences) WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].