Object reference not set to an instance of an object.

Server Error in '/' Application.

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.]
   System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) +138
   AjaxControlToolkit.ToolkitScriptManager.GetScriptCombineAttributes(Assembly assembly) +109
   AjaxControlToolkit.ToolkitScriptManager.IsScriptCombinable(ScriptEntry scriptEntry) +37
   AjaxControlToolkit.ToolkitScriptManager.OnResolveScriptReference(ScriptReferenceEventArgs e) +276
   System.Web.UI.ScriptManager.RegisterScripts() +275
   System.Web.UI.ScriptManager.OnPagePreRenderComplete(Object sender, EventArgs e) +122
   System.EventHandler.Invoke(Object sender, EventArgs e) +0
   System.Web.UI.Page.OnPreRenderComplete(EventArgs e) +9884010
   CMS.UIControls.AbstractCMSPage.OnPreRenderComplete(EventArgs e) +12
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1069


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3282.0