Hello I'm trying to make a very simple package in Zope 2.12.2 and i'm trying to configure a content type with: <interface interface=".interfaces.IRecipe" type="zope.app.content.interfaces.IContentType" /> and i'm getting: ConfigurationError: ('Invalid value for', 'package', "ImportError: Couldn't import zope.app.content, No module named content") I tried including "zope.app.content" and i'm getting 'ImportError: Module zope.app has no global content' error. Reading zope.app.folder's code I saw it includes "zope.site", so i tried with it and it doesn't work neither because it gives ConfigurationError: ('Invalid directive', u'factory'). I used to do stuff like this with zope 2.9 without problems and also tried with philipp's book samples getting same results, wich is the code i pasted here btw, then i guess it could be smt deprecated in Zope 2.12. I believe I should be able to solve this going deeper with zcml machinery, smt i've to do someday anyway :), but if you're familiar with the problem or can give me any hint, it will be very appreciated. Kind Regards r. -- http://robertoallende.com