When using Orders with Authorize.net AIM module, I gave a group permission to
View Orders, but no permission to Modify Orders.

When logged in as a user in this group if I click the Order Detail Link in the
order list, the following error is generated:

Fatal error: Call to undefined method orders_order::hide_ccinfo() in
/var/www/vhosts/cagt.org/httpdocs/modules/Orders/action.admin_manageorder.php on
line 69

However, if I give this user permission to "Modify Orders" the error does not
occur.