I fixed it!!!
after the installation of artio I got this message:
The JoomSEF extension installer adapter could not be installed, because the destination directory is not writable. If you want to be able to install JoomSEF extensions directly from the Joomla Installer, please manually copy this file:
/administrator/components/com_sef/adapters/sef_ext.php
to this directory:
/libraries/joomla/installer/adapters;
so... I copy that file and I needed to create this folder.
after that, I went to artio > manage Extensions and clicked on the ZOO link at the bottom.
inside, I went to the registration tab and added my extention ID and save it.
then, the small icon of the key changed his color.
at the end I just clicked on the get extention button and it install it for me.
hope that it helped you !!!!