Not so! Rejoice!
Here is my project file that gave me so much trouble:
Okay, kids. Can you take a SWAG at what to remove? Yeah, I thought so. You are now one up on official responses from the Eclipse project.
On another note, a super cool thing is that when I created this project, it did not have Groovy support. Guess what I did to add that. Of course, this isn’t official, and certainly not supported. But it worked because I have the necessary plug-ins installed.