I'm a webmaster since August 2000, and I learned HTML, phpBB, and other web related stuff all by myself and from the Net. But I never encountered web software that is forcing one to upgrade. Zenphoto is, because when not upgraded 3 or 4 weeks after the upgrade came out, my website displays the .../setup.php?autorun=gallery page.
Problem when trying to install 18.104.22.168: the message displayed several unnecessary files. After I clicked the button 'Delete Files', I'm getting a 500 error.
I checked the error log of my site, and some files are writeable by group so I changed their permissions to 644.