In Virtualmin, if you select the “pluxml.leppduweb.fr” domain, and then click Server Configuration -> Website Options, what is the “PHP Execution Mode” set to?
If i install pluxml, I can add an article (a file is created). If I add a comment, a file is created, but it’s empty (0 byte).
If I install wordpress, the installation works, but when it want to add “config.php” file, it’s created but it’s empty too…