User-2088523401 posted
With what you said, I decided to think about what it was that I did differently that may have caused this problem. And, I believe I found it. Normally, I would publish the whole site from VS. Lately, and I don't know why, maybe because it was working for
pages already on the site, but I started just publishing pages as I made edits. Well, I got lazy and when I added new pages I just published those new pages and not the site. Basically, the namespace DLL didn't get updated. So, the namespace for my new pages
didn't exist. I'm sure that's what happened.