Thank you for your post.
Even though WebDirect is enabled, make sure the Web Publishing Engine is turned on. That is, go to the Status page of the Admin Console, scroll down to "Web Publishing Engine", and make sure there is a green checkmark next to it. If not, then on the far right side, turn on Web Publishing Engine.
I have the exact same problem. It was working on Friday and suddenly stopped over the weekend. All indicators say that it should be working. PHP CWP engine works fine as well. There seems to be no reason for this.