[InvalidOperationException: Sequence contains no elements]
System.Linq.Enumerable.First(IEnumerable`1 source) +417
Blackbaud.Web.Content.Core.Event2.Event2Options.Load(Guid id, Boolean bypassCache) +292
Blackbaud.Web.Content.Portal.EventUIRegistrantBox.get_EventOptionsData() +290
Blackbaud.Web.Content.Portal.EventUIRegistrantBox.get_BioFields() +21
Blackbaud.Web.Content.Portal.EventUIRegistrantBox.IsGuestBioFieldIncluded(Int32 field) +59
Blackbaud.Web.Content.Portal.EventUIRegistrantBox.Build(Attendee boxData, Int32 boxIndex, Content contentObject) +715
Blackbaud.Web.Content.Portal.EventUIRegistrationGroups.BindRegistrants(Object sender, RepeaterItemEventArgs e) +244
System.Web.UI.WebControls.Repeater.OnItemDataBound(RepeaterItemEventArgs e) +139
System.Web.UI.WebControls.Repeater.CreateItem(Int32 itemIndex, ListItemType itemType, Boolean dataBind, Object dataItem) +193
System.Web.UI.WebControls.Repeater.AddDataItemsIntoItemsArray(IEnumerable dataSource, Boolean useDataSource) +291
System.Web.UI.WebControls.Repeater.PostGetDataAction(IEnumerable dataSource) +109
System.Web.UI.WebControls.Repeater.OnDataBinding(EventArgs e) +81
Blackbaud.Web.Content.Portal.EventUIRegistrationGroups.Setup(Content contentObject) +439
Blackbaud.Web.Content.Portal.EventUIStep1.Build(Content contentObject) +68
Blackbaud.Web.Content.Portal.Event2Display.LoadCurrentStep() +321
Blackbaud.Web.Content.Portal.Event2Display.LoadCurrentStepFromQueryString(Int32 currentStep) +2134
Blackbaud.Web.Content.Portal.Event2Display.Page_Load(Object sender, EventArgs e) +882
System.EventHandler.Invoke(Object sender, EventArgs e) +0
System.Web.UI.Control.OnLoad(EventArgs e) +108
System.Web.UI.Control.LoadRecursive() +90
System.Web.UI.Control.LoadRecursive() +185
System.Web.UI.Control.LoadRecursive() +185
System.Web.UI.Control.LoadRecursive() +185
System.Web.UI.Control.LoadRecursive() +185
System.Web.UI.Control.LoadRecursive() +185
System.Web.UI.Control.LoadRecursive() +185
System.Web.UI.Control.LoadRecursive() +185
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533
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