[Setup] OFS.Uninstalled Could not import class ' ' from module ' '

serge73 gsv at uralmail.com
Wed Feb 2 10:53:18 UTC 2011

I have made update Plone from 3.3.4 to 4.0.3.
Beforehand delete all customizations and products.
Deleted or left kss.demo and NuPlone.

After migration there were warnings
WARNING OFS.Uninstalled Could not import class ' ISimpleContent ' from
module ' kss.demo.interfaces'
WARNING OFS.Uninstalled Could not import class ' IThemeSpecific ' from
module ' Products. NuPlone.interfaces'
To install kss.demo and Products. NuPlone in plone 4 it is impossible.

In portal_view_customizations it is impossible to create customizations.

PicklingError: Can't pickle <class ' kss.demo.interfaces. ISimpleContent '>:
import of module kss.demo.interfaces failed 

How to find and delete links to these modules?
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