installing plone 5 , archetypes

Hello

I just gave a trial to the plone 5 unified installer

All went fine, but, when clicking the "install archetypes content types for plone"  i get the following error :

Traceback (innermost last):
    * Module ZPublisher.Publish, line 138, in publish
    * Module ZPublisher.mapply, line 77, in mapply
    * Module ZPublisher.Publish, line 48, in call_object
    * Module Products.CMFPlone.controlpanel.browser.quickinstaller, line 218, in __call__
    * Module Products.GenericSetup.tool, line 365, in runAllImportStepsFromProfile
__traceback_info__: profile-Products.ATContentTypes:default
    * Module Products.GenericSetup.tool, line 1119, in _runImportStepsFromContext
    * Module Products.GenericSetup.tool, line 1030, in _doRunImportStep
__traceback_info__: typeinfo
    * Module Products.CMFCore.exportimport.typeinfo, line 225, in importTypesTool
    * Module Products.GenericSetup.utils, line 838, in importObjects
__traceback_info__: portal_types
    * Module Products.GenericSetup.utils, line 834, in importObjects
__traceback_info__: types/Collection
    * Module Products.GenericSetup.utils, line 509, in _importBody
    * Module Products.CMFCore.exportimport.typeinfo, line 60, in _importNode
    * Module Products.GenericSetup.utils, line 730, in _initProperties
ValueError: undefined property 'content_meta_type'

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By the way,
There has been a typo for quite a while in buildout.sanitycheck   ( sudu instead of sudo )

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What is the best way to report problems while testing plone5 ? 
Thanks

Fred 

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