[ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index]
System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource) +72
System.Collections.Generic.List`1.get_Item(Int32 index) +14624587
ASP.<>c__DisplayClass16.<Execute>b__13() in c:\inetpub\wwwroot\gool.co.il\httpdocs\Views\Academic\FreeChapter.cshtml:154
System.Web.WebPages.<>c__DisplayClass7.<RenderSection>b__5(TextWriter tw) +414
System.Web.WebPages.WebPageBase.Write(HelperResult result) +108
ASP._Page_Views_Shared__OneColumnLayout_cshtml.<Execute>b__1() in c:\inetpub\wwwroot\gool.co.il\httpdocs\Views\Shared\_OneColumnLayout.cshtml:15
System.Web.WebPages.<>c__DisplayClass7.<RenderSection>b__5(TextWriter tw) +414
System.Web.WebPages.WebPageBase.Write(HelperResult result) +108
ASP._Page_Views_Shared__Layout_cshtml.Execute() in c:\inetpub\wwwroot\gool.co.il\httpdocs\Views\Shared\_Layout.cshtml:621
System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +252
System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +148
System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +122
System.Web.WebPages.<>c__DisplayClass3.<RenderPageCore>b__2(TextWriter writer) +309
System.Web.WebPages.WebPageBase.Write(HelperResult result) +108
System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body) +89
System.Web.WebPages.WebPageBase.PopContext() +310
System.Web.WebPages.<>c__DisplayClass3.<RenderPageCore>b__2(TextWriter writer) +309
System.Web.WebPages.WebPageBase.Write(HelperResult result) +108
System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body) +89
System.Web.WebPages.WebPageBase.PopContext() +310
System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +375
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +88
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +775
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +81
System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +188
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38
System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +29
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +52
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +39
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38
System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +43
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +602
System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +195
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +128