Class 'InviteTypeController' not found in entity_get_controller()

In latest version 7.x-4.1-rc1 I get this error:

error: Class 'InviteTypeController' not found in entity_get_controller() (Zeile 8162 von /var/www/..../httpdocs/_DRUPAL/includes/common.inc)

Invite 7.x-2.1-beta2 does not have this error!

Please release a new version.
Thank you.