<i>file_exists() [<a href='function.file-exists'>function.file-exists</a>]: open_basedir restriction in effect. File(/eztemplateautoload.php) is not within the allowed path(s): (/srv/www/vhosts/************/httpdocs:/tmp) in /srv/www/vhosts/*************/httpdocs/lib/eztemplate/classes/eztemplate.php on line 2216</i>
You must edit your php.ini and search for the open_base_dir value.
Just add the eZRoot inside like : open_base_dir = "/mydir/myotherdir/:/mydir/ezroot/"