Update rules

Update rules from 7.x.-29 to 7.x.2x-dev get this error:

drush dl rules-7.x-2.x-dev
Project rules (7.x-2.x-dev) downloaded to /var/www/html/www.test.com/sites/all/modules/rules. [success]
Project rules contains 4 modules: rules_scheduler, rules_i18n, rules_admin, rules.
root@coozila:/var/www/html/www.test.com# drush updb
The following updates are pending:

rules module :
7215 - Add an index for retrieving active config of a certain plugin.

Do you wish to run all pending updates? (y/n): y
Performed update: rules_update_7215 [ok]
PHP Fatal error: Class name must be a valid object or a string in /var/www/html/www.test.com/includes/common.inc on line 7999
Drush command terminated abnormally due to an unrecoverable error. [error]
Error: Class name must be a valid object or a string in /var/www/html/www.test.com/includes/common.inc, line 7999
The external command could not be executed due to an application error. [error]
Finished performing updates.