If you use Sales Order entry on version 4.40 or 4.50 and have tried to ship and order where a deposit was paid by credit card that did not have a pre-authorization then you may have run into an issue where the screen hangs in shipping data entry.
The message “Credit card unauthorized/authorization expired. Unable to ship this order” is displayed and you are forced to exit from the shipping data entry screen.
Sage have issued a fix for this issue and you can download it from the following link: