Class diagram weirdout

:wave:
At first I thought the machine had been smoking something (or perhaps maybe I had been) but then I spoke with my senior developer and he was experiencing the same thing.

We have been prototyping a new application by using class diagrams to create new classes - with associated methods, properties, etc. Things were going great for a couple of weeks and then the class diagram interface quit recognizing the classes, methods, etc. in the underlying .vb file. Nothing has changed that I can see in the code itself, but the class diagram tool just no longer recognizes the objects there. I even tried opening a new class diagram on an existing class that I had written a long time ago and it said there were no types found.

Has anyone else experienced this?