Quote Originally Posted by Website Rob View Post
Whenever using jQuery 1.12.x or 2.2.x I always advocate to also use jQuery Migrate which helps with backwards capability; ie. JS code that needs an earlier version of jQuery to work properly. It is a shim that is most handy. Save it on your hosting account though as calling it locally is faster.
Thanks, I'll keep that in mind ... although I'm not sure it applies in the current case as I'm able to checkout with OPC using either jQuery 1.12.x or 2.1.4.