Line 5: <% Html.RenderPartial("~/Views/Shared/Message.ascx"); %>
Line 6: <% var userVote =(Int )ViewData["userVote"]; %>
Line 7:
Line 8: <div id="posts">

This error is thrown when I try to view a particular forum post. ForumView.aspx. The ViewPost Action in page 338.
what's causing the Cast to fail?

Source File: Views\Forum\ViewPost.aspx Line: 6

Nick replied with the following correction--change (int) on line 6 to (short). This fix the error.