Hey, buddy, you can't go fixing people's problems with just one response. It's unethical.
Hah, well there ya go. This is a new computer and it has Trend Micro Titanium Internet Security 2012. Added the .exe to the exceptions list and ImgBurn closes just fine now.
I tried googling the problem multiple ways and nothing showed up. Next time I'll use the forum's search, lol.
Thanks a bunch, Mr. ianymaty!