eZ publish 3.x on PHP 5

Thursday 20 September 2007 6:43:29 am

I have problem editing user rights on my eZP 3.9.3 PHP5.
When I go in Administration panel into "User accounts" and click group "Editors" then I got this:
"Fatal error: eZ publish did not finish its request
The execution of eZ publish was abruptly ended, the debug output is present below."

in php_error.log I foud :
"PHP Fatal error: Call to a member function attribute() on a non-object in /u01/www/eZ/kernel/classes/ezpolicylimitation.php on line 244"

The line is:
"$functions =& $mod->attribute( 'available_functions' );"

Any help will be appreciated.