Let’s say you still use VB.Net. Also, for some reason you notice that your ‘Me’ keyword no longer works (not recognized by intellisense) and that your application startup subroutines errors out and says “Event ‘Startup’ cannot be found”.

It sounds really catastrophic, but for me, it wasn’t that big a deal. In the Application button of the project settings, make sure that the checkbox for ‘Enable Application Framework’ is checked. If you find that it’s unchecked, that’s the problem.