$t('Email Registration / LoginToboggan Conflict'), 'value' => $t('Conflict'), 'description' => $t('There is a conflict between %email_registration and %logintoboggan. You should disable the "Allow users to login using their e-mail address" option from %logintoboggan.', array('%email_registration' => 'Email registration', '%logintoboggan' => 'Login Toboggan')), 'severity' => REQUIREMENT_ERROR, ); } return $requirements; }