Cannot create or edit shared schedules

Products

• Server Management Suite
• Client Management Suite

Issue/Introduction

It is not possible to create new or edit existing (custom) Shared Schedules.  This seems to be broken since we upgraded last.  The Shared Schedules show a red exclamation point next to each schedule.  The Shared Schedules are also not being created in Windows Task Scheduler as they should be.

Environment

ITMS 8.x

Cause

Errors in SMP Logs:

Unable to create scheduled task: 'NS.Custom Last Wed 0200.{GUID}'

Value does not fall within the expected range.
   [System.ArgumentException @ Altiris.Interop]
   at Altiris.Interop.ITaskTrigger.SetTrigger(TaskTrigger& trigger)
   at Altiris.NS.Scheduling.ScheduleManagerInterop1.XmlToTrigger(ITask iTask, XmlTextReader xmlReader)
   at Altiris.NS.Scheduling.ScheduleManagerInterop1.XmlToTask(ITask iTask, String taskData)
   at Altiris.NS.Scheduling.ScheduleManagerInterop1.<>c__DisplayClass11_0.<SetTask>b__0(ITask iTask)
   at Altiris.NS.Scheduling.ScheduleManagerInterop1.<>c__DisplayClass12_0.<WithTask>b__0(ITask iTask)
   at Altiris.NS.Scheduling.ScheduleManagerInterop1.WithTask[T](String taskName, Boolean createNew, Boolean throwOnError, Func`2 action, String profileCategory)
   at Altiris.NS.Scheduling.ScheduleManagerInterop1.SetTask(String taskName, String taskData)
   at Altiris.NS.Scheduling.ScheduleManagerInteropContext.SetTask(String name, String task, ECreateOrUpdateResult re)

Exception logged from: 
   at Altiris.NS.Scheduling.ScheduleManagerInteropContext.SetTask(String, String, Altiris.NS.Scheduling.ScheduleManager+ECreateOrUpdateResult)
   at Altiris.NS.ItemManagement.ItemScheduleMonitor.CreateCustomSchedule(Altiris.Profiling.CodeProfiling.CodeProfiler, Altiris.NS.Scheduling.ScheduleManagerInteropContext, String, Altiris.NS.ItemManagement.IItemScheduling, Altiris.NS.Scheduling.ScheduleManager+ECreateOrUpdateResult, String)

Other errors:

Unable to update the scheduling data associated with the item: 4d40ef23-8f7a-48cd-9ce4-eda098ac5863

Unable to update the scheduling information associated with the item: GUID

Item save to DB failed: GUID, (fromClone=False, user=ConsoleUser)

Failed to edit schedule: GUID

Failed to add a new schedule.
Unable to update the scheduling information associated with the item: GUID

SharedSchedules.OnAddNewSchedule()
Failed to add a new schedule

Value does not fall within the expected range.

Resolution

Please do the following to resolve this issue:

• Open Core Settings (NS Console > Settings > Notification Server > Core Settings)
• Search for  "ScheduleManagerInterop".  If it’s there, set it to 1.  If this option is missing, please create it
• Restart the Altiris Services service
• Test the Shared Schedules