Quote Originally Posted by lat9 View Post
I've just submitted v2.0.1 of VAT4EU to the Zen Cart moderators for review; I'll post back here when it's available for download (https://www.zen-cart.com/downloads.php?do=file&id=2164).

This release contains changes associated with the following GitHub issue (as reported by @diamond1, above):

#4: PHP Warning issued when One-Page Checkout is not also installed.
Now available for download.