Membership 3.5.2.9 Broke Protected Content Redirect

Hey folks, I finally took the plunge and upgraded today from 3.5.1.8 to 3.5.2.9 (after the many problems I had with the immediate upgrades after 3.5.1.8). The only problem I've notcied so far is that when a visitor clicks on a protected page (http://lifeofcaesar.com/category/premium-podcast/), they get a 404 (see screenshot), not the "Protected Page" content (http://lifeofcaesar.com/protected-2/).

This was all working okay before the upgrade and I've walked through the settings post-upgrade but can't see where it's going wrong.

I've already set you up with support access if you want to take a look.