After clicking on the report builder link from report manager, the application downloads (>70 MB) and then I get a dialog box with the following text: Application cannot be started. Contact the application vendor. SSRS is installed on a 64bit Windows 2008 standard edition OS and I requested the DBA to install SQL Server 2008 r2 64bit Enterprise Edition. Clicking on the details button reveals this I replaced my server name with '<servername>': PLATFORM VERSION INFO Windows : 6.1.7600.0 (Win32NT) Common Language Runtime : 4.0.30319.1 System.Deployment.dll : 4.0.30319.1 (RTMRel.030319-0100) clr.dll : 4.0.30319.1 (RTMRel.030319-0100) dfdll.dll : 4.0.30319.1 (RTMRel.030319-0100) dfshim.dll : 4.0.31106.0 (Main.031106-0000) SOURCES Deployment url : http://<servername>/ReportServer/ReportBuilder/ReportBuilder_3_0_0_0.application Server : Microsoft-HTTPAPI/2.0 X-AspNet-Version: 2.0.50727 Application url : http://<servername>/ReportServer/ReportBuilder/RptBuilder_3/MSReportBuilder.exe.manifest Server : Microsoft-HTTPAPI/2.0 X-AspNet-Version: 2.0.50727 IDENTITIES Deployment Identity : ReportBuilder_3_0_0_0.application, Version=10.50.1600.1, Culture=neutral, PublicKeyToken=c3bce3770c238a49, processorArchitecture=x86 Application Identity : MSReportBuilder.exe, Version=10.50.1600.1, Culture=neutral, PublicKeyToken=c3bce3770c238a49, processorArchitecture=x86, type=win32 APPLICATION SUMMARY * Online only application. * Trust url parameter is set. ERROR SUMMARY Below is a summary of the errors, details of these errors are listed later in the log. * Activation of http://<servername>/ReportServer/ReportBuilder/ReportBuilder_3_0_0_0.application resulted in exception. Following failure messages were detected: + The referenced assembly is not installed on your system. (Exception from HRESULT: 0x800736B3) COMPONENT STORE TRANSACTION FAILURE SUMMARY No transaction error was detected. WARNINGS There were no warnings during this operation. OPERATION PROGRESS STATUS * [12/28/2010 8:24:14 AM] : Activation of http://<servername>/ReportServer/ReportBuilder/ReportBuilder_3_0_0_0.application has started. * [12/28/2010 8:24:15 AM] : Processing of deployment manifest has successfully completed. * [12/28/2010 8:24:15 AM] : Installation of the application has started. * [12/28/2010 8:24:18 AM] : Processing of application manifest has successfully completed. * [12/28/2010 8:24:19 AM] : Found compatible runtime version 2.0.50727. * [12/28/2010 8:24:19 AM] : Detecting dependent assembly Sentinel.v3.5Client, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=msil using Sentinel.v3.5Client, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=msil. * [12/28/2010 8:24:19 AM] : Detecting dependent assembly System.Data.Entity, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=msil using System.Data.Entity, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=msil. * [12/28/2010 8:24:19 AM] : Request of trust and detection of platform is complete. * [12/28/2010 8:24:27 AM] : Downloading of subscription dependencies is complete. * [12/28/2010 8:24:27 AM] : Commit of the downloaded application has started. ERROR DETAILS Following errors were detected during this operation. * [12/28/2010 8:24:27 AM] System.Runtime.InteropServices.COMException - The referenced assembly is not installed on your system. (Exception from HRESULT: 0x800736B3) - Source: System.Deployment - Stack trace: at System.Deployment.Internal.Isolation.IStore.GetAssemblyInformation(UInt32 Flags, IDefinitionIdentity DefinitionIdentity, Guid& riid) at System.Deployment.Internal.Isolation.Store.GetAssemblyManifest(UInt32 Flags, IDefinitionIdentity DefinitionIdentity) at System.Deployment.Application.ComponentStore.GetSubscriptionStateInternal(DefinitionIdentity subId) at System.Deployment.Application.SubscriptionStore.GetSubscriptionStateInternal(SubscriptionState subState) at System.Deployment.Application.SubscriptionState.Validate() at System.Deployment.Application.ComponentStore.CollectCrossGroupApplications(Uri codebaseUri, DefinitionIdentity deploymentIdentity, Boolean& identityGroupFound, Boolean& locationGroupFound, String& identityGroupProductName) at System.Deployment.Application.SubscriptionStore.CommitApplication(SubscriptionState& subState, CommitApplicationParams commitParams) at System.Deployment.Application.ApplicationActivator.InstallApplication(SubscriptionState& subState, ActivationDescription actDesc) at System.Deployment.Application.ApplicationActivator.PerformDeploymentActivation(Uri activationUri, Boolean isShortcut, String textualSubId, String deploymentProviderUrlFromExtension, BrowserSettings browserSettings, String& errorPageUrl) at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state) COMPONENT STORE TRANSACTION DETAILS No transaction information is available.