I installed locally the last version of Zenhoto to test before to upgrade my site's version.
Everything went perfectly and seemed to be functional but the "news" and "pages" don't appeared on the admin pages neither in the menu of the local site despite the SQL base has been correctly imported...
I'm not enough smart to find what is wrong !

Re-enable the Zenpage plugin. Somehow sometimes setup disables plugins unwanted. This bug is fixed in the support build already.