[Zope] Why is 'Shutdown' an Error?

[William BC Crandall]

Another start-up question.

Why does the Control Panel "Shutdown" button
generate an Error:


Zope Error
Zope has encountered an error while publishing this resource. 

exceptions.SystemExit

Zope has exited normally.

Traceback (innermost last):
  File C:\Program Files\TotipotentZope\lib\python\ZPublisher\Publish.py,
line 222, in publish_module
  File C:\Program Files\TotipotentZope\lib\python\ZPublisher\Publish.py,
line 187, in publish
  File C:\Program Files\TotipotentZope\lib\python\ZPublisher\Publish.py,
line 171, in publish
  File C:\Program Files\TotipotentZope\lib\python\ZPublisher\mapply.py,
line 160, in mapply
    (Object: manage_shutdown)
  File C:\Program Files\TotipotentZope\lib\python\ZPublisher\Publish.py,
line 112, in call_object
    (Object: manage_shutdown)
  File C:\Program
Files\TotipotentZope\lib\python\App\ApplicationManager.py, line 383, in
manage_shutdown
    (Object: ElementWithAttributes)
SystemExit: 0