I "fixed" this by simply waiting for the files to open. After clicking on the EB exe, it took about 40 minutes to open, and it installed fine. After selecting the files and pressing delete, it took about 45 minutes for the delete yes/no window to pop up and they have been deleted. When I cleared my firefox download history, it took about 30 minutes for it to clear. Now everything's peachy, and EB seems to be working fine. Ha, kind of strange. What is so different about the EB executable that causes such bizarre behavior when you try to open them? Looks like I'm not the only person getting this in Windows 7, and I have never seen an exe take more than instant time to open.

Well, anyhow, if anyone else gets this problem - rest assured, if you just click and go do something else for an hour, it will be open when you get back. Give it some time.