[armydan]

I have IL-2 for steam too, but first off you shouldn't download UI 1.1 and you should download HSFX 4.1 or UP 2.0 because they are much better. We have all messed up an install so i say, you can either delete il-2 from your steam folder to reinstall, and yes, it will still be able to install again, no need to rebuy, or you could spend lots of time trying to fix it. Don't know about you, but a 30 min reinstall sounds a lot better to me.

Hope this helps a bit.