Configuration Error 
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. 

Parser Error Message: Could not load file or assembly 'System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

Source Error:

Line 41: 		<compilation defaultLanguage="c#" debug="true">
Line 42: 			<assemblies>
Line 43: 				<add assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
Line 44: 				<add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
Line 45: 				<add assembly="System.Web.Extensions.Design, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

Source File: c:\inetpub\wwwroot\web.config    Line: 43 

Assembly Load Trace: The following information can be helpful to determine why the assembly 'System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' could not be loaded.

Object reference not set to an instance of an object. 
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.NullReferenceException: Object reference not set to an instance of an object.

Source Error: 


Line 545:		private void FixAccess( bool bGrant )
Line 546:		{
Line 547:            DB.system_initialize_fixaccess(bGrant);		
Line 548:		}
Line 549:		#endregion
 

Source File: c:\Inetpub\wwwroot\install\default.aspx.cs    Line: 547 

Stack Trace: 


[NullReferenceException: Object reference not set to an instance of an object.]
   YAF.Classes.Config.get_ConnectionString() +25
   YAF.Classes.Data.YafDBConnManager.InitConnection() +90
   YAF.Classes.Data.DB.system_initialize_fixaccess(Boolean grant) +50
   YAF.Install._default.FixAccess(Boolean bGrant) in c:\Inetpub\wwwroot\install\default.aspx.cs:547
   YAF.Install._default.UpgradeDatabase(Boolean fullText) in c:\Inetpub\wwwroot\install\default.aspx.cs:273
   YAF.Install._default.Wizard_NextButtonClick(Object sender, WizardNavigationEventArgs e) in c:\Inetpub\wwwroot\install\default.aspx.cs:205
   System.Web.UI.WebControls.Wizard.OnNextButtonClick(WizardNavigationEventArgs e) +108
   System.Web.UI.WebControls.Wizard.OnBubbleEvent(Object source, EventArgs e) +418
   System.Web.UI.WebControls.WizardChildTable.OnBubbleEvent(Object source, EventArgs args) +19
   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37
   System.Web.UI.WebControls.Button.OnCommand(CommandEventArgs e) +118
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +166
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565