Don't you hate it when things like this happen? All I did was add a UserControl to the project and this error started popping up when I tried to compile - “Generation of designer failed“.

This reminds me of a problem getting ASP.NET debugging up and running one time but thankfully wasn't as big a headache and I didn't really have to dig for the fix. I was able to ignore this error by putting the control declarations in the code-behind but it was only a temporary fix. Finally, when putting in some post-build events, I saw what the problem was.

How in the heck this little character got in the project file is still a mystery. Delete it and I was up and running. I wish I had those 20 minutes back...