Re: How to Re-Install
From the topic you referenced, it sounds like you moved the location of your WordPress files.
It seems harmless enough, but it can cause a whole world of hurt (like you’re finding out now.)
Sadly there isn’t a magic reset button to make everything go back into alignment, so chances are that to get things up and running you’re going to be debugging and manually editing some database entries.
If keeping your existing data is important, and you’re in over your head, then it’s time to hire a professional to snoop around and see what they can salvage.