Support for multilanguage sites, Internationalization (I18N)

[Felix]

well, this is such a nightmare.

To open the page list I had to deactivate the I18n-Plugin and I18nbase-plugin,

But when I try to edit a post or create a new post, an empty page with the header of the template is shown, not the edit-environment, like a blank page with header and footer

I tried everything, with activated HTML-editor and with de-activated HTML-Editpor

I really do not understand anything what is going on here. This happens to only one of 4 GS installations

and the server-health-check shows everything in green !!!!

but all content editing, page lists ... is broken except the presentation of the content on the frontend (with activated error suppression)

WTF???  

This is why I have daily cron job backups of my websites.