I built an empty scheduler module to add to the scheduler, per the latest documentation and as posted on http://www.wwwcoder.com/tabid/68/type/art/parentid/224/site/6401/default.aspx

Here's my code:

Imports System.Configuration
Imports DotNetNuke
Imports System.Web

Namespace MyProject

Public Class MemberSyncScheduler
   Inherits DotNetNuke.Services.Scheduling.SchedulerClient

Public Sub New(ByVal objScheduleHistoryItem As DotNetNuke.Services.Scheduling.ScheduleHistoryItem)
    MyBase.new()
    Me.ScheduleHistoryItem = objScheduleHistoryItem
End Sub

Public Overrides Sub DoWork()
  Try
     Me.Progressing()
     NewTest()
     Me.ScheduleHistoryItem.Succeeded = True
     Me.ScheduleHistoryItem.AddLogNote("MemberSync updated successfully")

  Catch ex As Exception
     Me.ScheduleHistoryItem.Succeeded = False
     Me.ScheduleHistoryItem.AddLogNote("EXCEPTION: " + ex.ToString)
     Me.Errored(ex)
  End Try
End Sub

Private Sub NewTest()
' do nothing
End Sub

End Class
End Namespace

I compiled it (no errors) with the dll ending up in the bin directory.  Then I added it to the scheduler to my website:

Full Class Name and Assembly:  MyProject.MemberSyncScheduler, MemberSyncScheduler
Schedule Enabled: Yes
Time Lapse:  2 minutes
Retry Frequency: 10 minutes
Retain Schedule History: 25
Run on Event: None
Catch Up Enabled: (not checked)
Object Dependencies: (none)
Run on Servers: localhost

But as soon as I update it, I get an unhandled exception ('System.NullReferenceException') occurred in aspnet_wp.exe[372].

Followed by these twp pop-up windows:

   An unhandled exception of type 'System.NullReferenceException' occurred in DotNetNuke.DNNScheduler.DLL
   Additional information: Object reference not set to an instance of an object.

   An unhandled exception of type 'System.NullReferenceException' occurred in Unknown Module.
   Additional information: Object reference not set to an instance of an object.

Then the website dies with this error:

   Server Application Unavailable
   The web application you are attempting to access on this web server is currently unavailable. 
   Please hit the "Refresh" button in your web browser to retry your request.

   Administrator Note: An error message detailing the cause of this specific request failure can be
   found in the application event log of the web server. Please review this log entry to discover what
   caused this error to occur.

I have to remove the entry in the Schedule table to get the website back up. 

What do I need to do/add/change to make the scheduler take my new schedule task?  Help!!!

- LL