Hello,
I changed the directory from .../public_html/gallery to .../public_html, Zenphoto is now asking for a re-setup. I have the option to ignore the message, what to do? I have already made several changes to the theme and filled it with my images, I would not like to start over again. So will ignoring the message to re setup cause trouble?
Gr Hans

Simply run setup again if you move your installation on the same server. Nothing will be lost.

So will ignoring the message to re setup cause trouble?
Yes, because during setup Zenphoto must determine its location and set the right paths accordingly.

Thanks for the advice!

Just to note for completness we have info about this right on our site as well:
https://www.zenphoto.org/news/installation-and-upgrading/#--moving-existing-installations
respectively the full article linked within that:
https://www.zenphoto.org/news/moving-and-changing-existing-installations/