oli-v-ier Thank you for your answers. As it might affect other people, I'll explain : Windows operating system does not distinguish between upper case and lower case in file and folder names, so if you paste a file named Plugin.php in a folder that aldready has a plugin.php file, the content of the file will be replaced, but not the name.
oli-v-ier Hello, I've tried to install 2018-04-22b "Greebo" from : https://download.dokuwiki.org/ Got an 500 error on a linux server. Solved with : inc/plugin.php renamed inc/Plugin.php ...
schplurtz Hello, Something must have been wrong with your extrtaction command. https://download.dokuwiki.org/src/dokuwiki/dokuwiki-stable.tgz contains the correct file inc/Plugin.php. There are many files with MixedCase name. perhaps you should check the whole arborescence.
michaelsy For this reason, it is sometimes a better choice to use the DokuWiki Downloader. Furthermore information: https://forum.dokuwiki.org/post/63361
turnermm I've seen this problem cme up seveeral times, and I just answered another user, after playing with this: https://forum.dokuwiki.org/thread/16642