For any clarification, please reach out to Péter Simonyi as he opened this request.
According to the customer, in the above article it is not clearly described how the different properties should be added to the app-server.properties file.
dir: it's not clear if relative, absolute path or both types are allowed
extra.lib.dirs : it's not specified if the path should be relative (to dir) or absolute. I only manage to get this working using relative path to the dir path.
Maybe we could add to the documentation that for the dir property both absolute and relative paths can be used. For the extra.lib.dirs, global.lib.dir and portal.dir properties relative paths should be used.