Well, I think we're down to two things, unless someone else has any other ideas:
1. You did delete ALL OOTP folders after uninstall and prior to install? That includes the Program Files/OOTP...2007 directory AND the Owner/Documents...OOTP folder?
2. We may need to have you upload the league you're trying to load to see whether it is a league problem and not a 'game' problem.
Edit: NOW I see you created a new fictional league, so I'm even more stumped. Review the total uninstallation, because obviously there can't (shouldn't) be anything wrong with your original downloaded game.
Did you add a patch later, or was the game you downloaded patch-inclusive? I assume the former. Darn it, this is very peculiar.