salam, i am facing this problem in DNN. please help me as soon as posible. Server Error in '/DNN' Application. -------------------------------------------------------------------------------- Value cannot be null. Parameter name: type 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.ArgumentNullException: Value cannot be null. Parameter name: type Source Error: Line 80: Line 81: 'Determine the Upgrade status and redirect to Install.aspx Line 82: Select Case GetUpgradeStatus() Line 83: Case Globals.UpgradeStatus.Install Line 84: If AutoUpgrade Then Source File: G:\Cycling by numbers\DotNetNuke\onTrack\App_Code\Global.asax.vb Line: 82 Stack Trace: [ArgumentNullException: Value cannot be null. Parameter name: type] System.Activator.CreateInstance(Type type, Boolean nonPublic) +2843963 System.Activator.CreateInstance(Type type) +6 DotNetNuke.Framework.Reflection.CreateObject(String TypeName, String CacheKey, Boolean UseCache) +49 DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectProviderName, String ObjectNamespace, String ObjectAssemblyName, Boolean UseCache) +892 DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectNamespace, String ObjectAssemblyName) +45 DotNetNuke.Data.DataProvider.CreateProvider() +54 DotNetNuke.Data.DataProvider..cctor() +28 [TypeInitializationException: The type initializer for 'DotNetNuke.Data.DataProvider' threw an exception.] DotNetNuke.Data.DataProvider.Instance() +0 DotNetNuke.Entities.Portals.PortalSettings.GetProviderPath() +24 DotNetNuke.Common.Globals.GetUpgradeStatus() +147 DotNetNuke.Common.Global.CheckVersion() in G:\Cycling by numbers\DotNetNuke\onTrack\App_Code\Global.asax.vb:82 DotNetNuke.Common.Global.Application_Start(Object Sender, EventArgs E) in G:\Cycling by numbers\DotNetNuke\onTrack\App_Code\Global.asax.vb:313 regards, farhan