I would guess a lot, and rightly so IMO. I know it didn't work for a lot of people, but I'm sure it worked for a lot more. The amount of people stuff doesn't work for always seems to overshadow the amount of people it does, simply do to the fact the people it didn't work for are the ones (justifiably) complaining.
I think it was a great game, quest bugs aside and stuff like that aside.
Pretty much my answer to this thread and many others as well.
Then, might I ask, what is the point of even posting? Like mods you don't have to install, you could simply read the thread title and move on.