Errors with 'DeleteFolder' in 'TaskScheduler'

'TaskScheduler' - https://msdn.microsoft.com/en-us/lib...(v=vs.85).aspx
'DeleteFolder' - https://msdn.microsoft.com/en-us/lib...(v=vs.85).aspx


This creates a folder in 'TaskScheduler':

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This deletes the folder:

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But without the 'On Error Resume Next', it gets this error(but still deletes the folder):
WithoutOnErrorResumeNext.jpg
This:

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Makes 'TaskSched.GetFolder("\").DeleteFolder("NewFolder", 0)' turn red, and gives this error:
NoSetEquals.jpg
Replacing 'Object' with 'ITaskService':

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Results in this error, while '.DeleteFolder' gets selected/highlighted:
ITaskService.jpg