Quote Originally Posted by niccol View Post
Oh, I see. There are changes to shipping.php in v1.5.5

My mistake. I had expected backwards compatibility. But should not have. And it does have a warning if you read down the list of previous versions.

My bad.
No problems.

Regarding the backwards compatibility, it's something I strive for but the core-file changes needed for Edit Orders affect modules that seem to change on each new Zen Cart release ... so I'm working to push the required notifiers into the "core" and rely on those notifications being present for various plugins' operation! The shipping.php class for EO is a case-in-point.