I haven't been able to upgrade my Postnuke site to the latest version 1.12 because the latest version of Photopost Classifieds comes with a Postnuke integration that is now two years out of date (Postnuke ver .764).
It's been that long since Postnuke reached version .8 and changed it's name to Zikula, there were several major changes in the user table that affect the integration. Download the latest files from here.
Homepage :: Zikula Application Framework :: Fast easy and free - Do you dig it?
Please create a integration file that will work with Postnuke/Zikula, or state that you will no longer support Postnuke (and remove it from your feature list) so I can find another classifieds solution.