Hello Stan,
Im interesting if you have in plan make some fix for One Page Checkout for VM3 for delivery plugin by Zasilkovna.cz / Zasielkovna.sk (you have probably finished fix for Ulozenka.cz).
Plugin for Zasilkovna working ok only when is OPC disable.
When I enable its doesnt load places, there is a problem with delivery plugin order and problem when I choose other country then Slovakia or Czech - page still loading, but its blank.
Thank you for information.
Best Regards
Jiri