Server Error in '/CpelPreInscripcion' Application.

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

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.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

Source Error: 


Line 7:  <% var personasAdicionales = Convert.ToInt32(ViewData["PersonasAdicionales"]); %>
Line 8:  <% var personas = ((List<Persona>)ViewData["Personas"]); %>
Line 9:  <% var alumno = personas[0]; %>
Line 10: 
Line 11:

Source File: d:\inetpub\www_cpelpreinscripcion\Views\Formulario\Impresionpre.aspx    Line: 9

Stack Trace: 


[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) +67
   System.ThrowHelper.ThrowArgumentOutOfRangeException() +16
   System.Collections.Generic.List`1.get_Item(Int32 index) +19
   ASP.views_formulario_impresionpre_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in d:\inetpub\www_cpelpreinscripcion\Views\Formulario\Impresionpre.aspx:9
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +88
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +25
   System.Web.UI.Page.Render(HtmlTextWriter writer) +30
   System.Web.Mvc.ViewPage.Render(HtmlTextWriter writer) +58
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +52
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +198
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +27
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5797