Version 1.4.0 of the UPS/Restful shipping module is now available for download: https://www.zen-cart.com/downloads.php?do=file&id=2374

Note: The update might work on Zen Cart versions 1.5.4 through 1.5.6, but I have no means of testing so no guarantees. PHP versions prior to 7.0 will result in PHP fatal errors!

This release contains changes for these GitHub issues:

#49: Conditionally issue curl_close, it has no effect since PHP 8.0 and is deprecated in PHP 8.5.
#36: Don't load 'legacy' language file on zc158 and later to avoid duplicate-constant errors.
#53: Update UPS API version from v1 to v2409.
#54: Modify configuration-value access, using zc300's zen_config function, if present.
#47: Re-factor code determining error message to be displayed (thanks, @retched).
#52: Include dimensions; based on the contribution from @popupparts. This change includes two additional configuration settings.
#48: Display a message indicating that UPS doesn't ship to USPS P.O. Boxes. This change includes an additional configuration setting.