thank you very much for your reply!
But - to be honest - I just restored my backup from version 6, as version 7 is not the right thing for our users at the moment.
There are too many issues in version 7 which our users don't like, starting from pop-up windows for large images and some more. I don't see any advantages in version 7 at the moment as well, sorry.
Maybe I'll try again later this year...