Home / Community & Support / Developer Productivity Tools Forums / ASP.NET AJAX > RadControls in ASP.NET MVC > System.NullReferenceException: Object reference not set to an instance of an object.

• venkat

  Posted on Jul 15, 2011 (permalink)

  Hi I am using the telerik version Q2 2010 SP2 . using Visual Studio 2010. whenever i try to load the page which is using RadControls for ASP.NET AJAX Q2 2010 SP2 . I am getting the Following Error. Do you have any Idea why I am getting this error.
  

  Server Error in '/EDWICD10' Application.

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  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:
  
  

  An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

  
  Stack Trace:
  
  

  [NullReferenceException: Object reference not set to an instance of an object.] Telerik.Web.UI.ScriptEntrySlot.GetSerializedAssemblyInfo(ScriptEntry scriptEntry) +208 Telerik.Web.UI.ScriptEntrySlot.SerializeScriptEntry(ScriptEntry scriptEntry) +71 Telerik.Web.UI.ScriptEntryUrlBuilder.TryAddScriptEntry(ScriptEntry scriptEntry) +56 Telerik.Web.UI.ScriptEntryUrlBuilder.RegisterScriptEntry(ScriptEntry scriptEntry) +239 Telerik.Web.UI.RadStyleSheetManager.Page_PreRenderComplete(Object sender, EventArgs e) +373 System.EventHandler.Invoke(Object sender, EventArgs e) +0 System.Web.UI.Page.OnPreRenderComplete(EventArgs e) +8933914 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2716

  
  

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  Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1

  Reply

• Simon Simon

  Posted on Jul 18, 2011 (permalink)

  Hi Venkat,
  
  This exception is thrown when a requested assembly resources does not exist in the designated assembly. Do you have any explicit embedded script references in the RadScriptManager on the page (added in the markup or through code)?
  
  If there are no explicit script references, please try the following:
  

  • Replace RadScriptManager with ScriptManager;
  • Observe the requests with Firebug or Fiddler to see if there are any failing requets;
  • If there are, please use the approach shown in this blog post to get the name of the invalid web resource;

  
  Regards,
  Simon
  the Telerik team

  Register for the Q2 2011 What's New Webinar Week. Mark your calendar for the week starting July 18th and book your seat for a walk through of all the exciting stuff we will ship with the new release!

  Reply

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Home / Community & Support / Developer Productivity Tools Forums / ASP.NET AJAX > RadControls in ASP.NET MVC > System.NullReferenceException: Object reference not set to an instance of an object.