While trying to upgrade from eZ Publish 4.7 to 5.0, if I execute the scripts described on Step 4: Run scripts I get the following errors:

php update/common/scripts/5.0/deduplicatecontentstategrouplanguage.php
PHP Warning: Invalid argument supplied for foreach() in /var/www/apache2php53/ezp5/ezpublish_legacy/kernel/private/classes/ezcontentobjectstategroup.php on line 122
Changing the primary key in table ezcobj_state_group_language Done
[vl@oracle:/var/www/apache2php53/ezp5/ezpublish_legacy ] $ php update/common/scripts/5.0/restorexmlrelations.php
This upgrade script is only required for installations that have more than one language
[vl@oracle:/var/www/apache2php53/ezp5/ezpublish_legacy ] $ php update/common/scripts/5.0/disablesuspicioususers.php --disable
Script found 1 user accounts with suspicious login.
Login list
PHP Warning: Invalid argument supplied for foreach() in /var/www/apache2php53/ezp5/ezpublish_legacy/update/common/scripts/5.0/disablesuspicioususers.php on line 43
Done.