I have installed One Page Checkout 1.0.9 with Zen Cart v1.55b. Check out with a credit card using Paypal Payments Pro (paypaldp), I get redirected to the Confirmation Page. No js errors or anything in the logs. The problem is reproducible in a 'clean' install of 1.55b.

Shipping modules are Store Pickup, UPS and USPS. Payment modules are Paypal Express, Paypal Payments Pro, Purchase Orders (from Super Orders).

Great mod otherwise! Thanks in advance for any help.