'error.no_groups' => 'Your database is empty. Login as admin and create a new group.',
'error.upload' => 'File upload error.',
'error.range_locked' => 'Date range is locked.',
-'error.mail_send' => 'Error sending mail.',
+'error.mail_send' => 'Error sending mail. Use MAIL_SMTP_DEBUG for diagnostics.',
'error.no_email' => 'No email associated with this login.',
'error.uncompleted_exists' => 'Uncompleted entry already exists. Close or delete it.',
'error.goto_uncompleted' => 'Go to uncompleted entry.',
'label.end_date' => 'End date',
'label.user' => 'User',
'label.users' => 'Users',
+'label.group' => 'Group',
'label.roles' => 'Roles',
'label.client' => 'Client',
'label.clients' => 'Clients',