I've just upgraded from 154 to 155.a and everything seemed to be working.

But a customer just placed an order, and I received payment. However, the order doesn't appear in my admin as "pending"; my customer's name doesn't appear under "new orders"; the stock she purchased was not removed from the inventory; and I received no confirmation email an order had been placed.

I only received the email telling me I was paid, or I would never have known she bought anything.

This is the first order I've received since upgrading.

I've looked all through the admin settings but cannot understand what changed to cause this to happen.