In the joomla forum some things came up in the proces.. M17n is not working that well with SEO activated in Joomla. The association between the menu items is buggy. A soon as SEO is turned off it works like a charm again...

Also there are some other issues. The following lists all issues at the moment.

• M17n does not work as is it should using SEO, association between menu items isonly working with SEO switched off.
• Association is only working when the article items is NOT a universal one. Meaning: only one menu item set as universal cannot be associated to another item therefore it's not (yet) working.
• Index.php is no longer needed to be hacked.
• Article.php also does not need a hack.