Hello All,

I believe that I have found a bug with the Event Module "Export Event to Desktop Event" feature.

If the "Created by" value is blank on the detail screen for the event, and a user clicks the "Export Event to Desktop Event" link, they will get the error at the bottom of this email.

This error can happen one of two ways:
1. If the user who created the event has been deleted from the system, this error will occur.
2. If your configuration for the Event maodule allows events to be created/edited by the "All Users" role and the user creating the event is not logged in.

It looks like the error is caused due to the fact that the objUsers object is not populated. It looks like the objUsers object is not populated because the oEvent.CreatorID is either 0 (null) or no longer has a parent record in the users table. The error occurs when the code is trying to access the Username property of the objUsers object.

Line #883 of EventController.vb seems to be where the issue is:
Dim sEmail As String = "ORGANIZER:MAILTO:" & objUsers.Username & vbCrLf

Suggested fix:
Dim sEmail As String = "ORGANIZER:MAILTO:"
If IsNothing(objUsers) = False Then
sEmail += objUsers.Username
End If
sEmail += vbCrLf


This error happens under both DNN 3.x and 4.x.

Thanks, Mir


Error:
Object reference not set to an instance of an object.
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.NullReferenceException: Object reference not set to an instance of an object.

Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:
[NullReferenceException: Object reference not set to an instance of an object.]
DotNetNuke.Modules.Events.vEvent.GetOutlookEvent(Int32 EventID, HttpContext oContext, DateTime SelectedDate) +247
DotNetNuke.Modules.Events.vEvent.ProcessRequest(HttpContext oContext) +578
DotNetNuke.Modules.Events.EventVCal.Page_Load(Object sender, EventArgs e) +48
System.Web.UI.Control.OnLoad(EventArgs e) +99
System.Web.UI.Control.LoadRecursive() +47
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1061