If the demo worked, you're doing something wrong.
Good point. Have you tried the demo before buying it?
I don't want to deal with it or fix it,
Yep. Demo worked fine. I don't know what's wrong.
Have you installed any add-ons?
Nope.
Post your console.log please.
Did you download any add-ons?
Can you read? I don't want to have to buy a game only to find out it's broken and I have to fix it! I just want my money back.