I've just submitted v2.0.1 of One-Page Checkout to the Zen Cart plugins for review and will post back here once it's available there for download.

This release contains changes associated with the following GitHub issues:


#122: Terms & Conditions doesn't display using ZCA Bootstrap template.
#125: Debug-log generated when no shipping is available.
#127: Some payment methods are dependent on the shipping-method chosen.
#128: Change cursor to "wait" during AJAX processing.
#129: Missing $stock_check variable on 'checkout_one' page.
#130: Payment choices throws 'PHP Notice' when payment is not set.
#131: Full-account shipping-address drop-down not rendered.
#132: Correct shipping/billing address change handling.
#134: Delivery address missing from email when it's different from billing.
#135: Session-variables not reset on non-guest checkout.
#136: Gzip can "get in the way" of order-confirmation.
#137: Include "cache-buster" for jQuery updates.
#138: Alignment issue on OPC 'login' page replacement.
#139: Guest checkout, privacy notice not displayed.
#140: Validate temporary entries prior to order-creation.