#195 Can not install

[Anonymous]

This is a Plone 2.1.2 server.

This is the traceback:

2006-02-26 18:53:16
failed:
Traceback (most recent call last):

File
"/Applications/Plone2/Sites/Default/Products/CMFQuickInstallerTool/QuickInstallerTool.py",
line 320, in installProduct
res=install(portal)

File
"/Applications/Plone2/Library/Software/Zope278/Zope/lib/python/Products/ExternalMethod/ExternalMethod.py",
line 225, in __call__
try: return f(*args, **kw)

File
"/Applications/Plone2/Sites/Default/Products/PloneiCalendar/Extensions/Install.py",
line 69, in install
installation = Installation(self)

File
"/Applications/Plone2/Sites/Default/Products/PloneiCalendar/Installation.py",
line 43, in __init__
self.navigation_properties =
self.portal_properties.navigation_properties

AttributeError: navigation_properties