OK, in Internet Exploder to the right of but also part of the back arrow there is a small down arrow ( hover over but don't click the back arrow to see it) that shows your history. If you click on that does it show your history, AND does that work?
Try going to a bunch of different sites, then come here and when the back arrow does not work check the down arrow history and click on another site. Let me know if it takes you there or not, and if you get the same scripting errors.
http//ad.doubleclick.net/adi/N8667.842 Edge, This is what my history (down arrow) shows when the back button won't work and I get cross scripting warning. The history shows multiple instances of this "site" even though I had just viewed this thread once. The ad at the top of the page is for "xfinity" if that is relavent. It won't let me spell check this post either-can you tell!! After I have visited other websites I can check the history and none of the "ad.doubleclick" instances show. They show only when I am on this site.
I followed this direction on my home computer and it worked fine. Still have problems on my work computer because I don't have admin privileges and can't make the changes. Maybe theyre trying to tell me I shouldnt be on Doug's while Im at work?!? Seriously my work has their own servers and some pretty fussy security so I don't think there is an issue with spyware on the computer-unless the boss put it there!