Server Error in '/' Application.

---

Line 43:         // then get the selcted event from publishing site if that dosn't exist 
Line 44:         //then show next upcioming event from current site 
Line 45:         objViewCONTENTBookingEventJoined = CContentBookingEvent.Instance().fn_getContentBookingEventBySiteId(CurrentSite.SiteID).ToList();
Line 46:         if (objViewCONTENTBookingEventJoined == null || objViewCONTENTBookingEventJoined.Count == 0)
Line 47:         {

[ObjectDisposedException: The ObjectContext instance has been disposed and can no longer be used for operations that require a connection.]
   System.Data.Objects.ObjectContext.EnsureConnection() +11658009
   System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) +66
   System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator() +47
   System.Linq.Enumerable.SingleOrDefault(IEnumerable`1 source) +271
   System.Linq.Queryable.SingleOrDefault(IQueryable`1 source) +383
   ML.DAL.CMLXCMSSite.fn_getByDomain(String strDomain) in C:\tfs\Release\ML.DAL\Implementation\CMLXCMSSite.cs:42
   ML.DAL.BaseController.get_CurrentSite() in C:\tfs\Release\ML.DAL\BaseController.cs:55
   CMSWebParts_MLCustomWebParts_ComingEvent_NextEventCustomWebPart.BindComingEventsDatalist(Int32 iSiteId) in c:\Project\Solution\ml\CMSWebParts\MLCustomWebParts\ComingEvent\NextEventCustomWebPart.ascx.cs:45
   CMSWebParts_MLCustomWebParts_ComingEvent_NextEventCustomWebPart.Page_Load(Object sender, EventArgs e) in c:\Project\Solution\ml\CMSWebParts\MLCustomWebParts\ComingEvent\NextEventCustomWebPart.ascx.cs:30
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
   CMS.PortalControls.CMSAbstractWebPart.OnLoad(EventArgs e) +248
   System.Web.UI.Control.LoadRecursive() +71
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3064