Getting an error when clicking on a calendar entry.

I get an error that is caught in my global error handler, e.g.  AddHandler Application.ThreadException, Sub(sender As Object, e As Threading.ThreadExceptionEventArgs).  The error seems to happen in the RetrieveVirtualEvent of the Wisej.Web.Ext.FullCalendar.FullCalendar control.  The error cannot be caught in the event, only in the global event handler.  It happens when I tap on calendar entry and it only happens when using an iPad 2.

Here is the stack trace.

Microsoft.CSharp.RuntimeBinder.RuntimeBinderException
Cannot implicitly convert type ‘long’ to ‘int’. An explicit conversion exists (are you missing a cast?)
CallSite.Target(Closure , CallSite , Object )
Wisej.Web.TouchEventArgs..ctor(WisejEventArgs e)
Wisej.Web.Control.ProcessTouchWebEvents(WisejEventArgs e)
Wisej.Base.ControlBase.Wisej.Core.IWisejComponent.Event(WisejEventArgs e)
Wisej.Base.ApplicationBase.OnWebEvent(WisejEventArgs e)
Wisej.Web.Application.OnWebEvent(WisejEventArgs e)
Wisej.Base.ApplicationBase.Wisej.Core.IWisejComponent.Event(WisejEventArgs e)
Wisej.Core.ComponentManager.DispatchEvents(Session session, ICollection events)
Wisej.Core.ResponseManager.<>c__DisplayClass22_0.<OnEvent>b__0()
Wisej.Core.IWisejSynchronizedImplementation.Lock(IWisejSynchronized target, Action action)
Wisej.Core.ResponseManager.ProcessRequest(ServiceType service, Object message)