Hi,
Or created a button "XXX" where or put the link to the "Categories" but it goes to the page with this message "category id 0 not published" and not seen categories - why? THANK YOU

www.saintlouisdoc.it/nuovosito2014/index.php/xxx

Your joomla is generating this message.
Because you are trying to access a page that doesn't defined or the article that is linked to it is in a Joomla Category that has been unpublished.

Joomla also have categories. Check the "Categories" in the joomla backend. Also disable SEF URL and see what the original non-SEF URL of that XXX page is.

Be aware!
This has nothing to do with our Template.

We are providing free support only if the problem is directly related to our VM Template. We don't provide free support for general Joomla or Virtuemart questions.

Topic is locked.

Regards,
Support