strange problem with mfc-cb-user.js script i use with TamperMonkey

[Syl0pt]

So I've run into a strange problem that i have NO idea how to fix. (Not that computer savvy. Had to have my hand held and walked thru step-by-step while just installing FFmpeg.)

I use a script on TamperMonkey to stream-record MFC models. It's called 'mfc-cb-user.js' and I use TamperMonkey on Chrome with it. Don't know if any of u had an experience with this particular .js script.
(.js script i'm talking about http://pastebin.com/GwWXCz28)

I've had little problems with it during the last year, except for tonight. I had just got done capping a model and refreshed the page cuz it was stalling. But after refreshing, the script no longer works am i'm baffled as to why.

I tried re-starting the browser, the computer (twice), and even tried it on Firefox without much luck. (it worked with Firefox until I refreshed the page, then it stopped working, like it did on Chrome. Firefox also wants to to install Adobe Flash to watch MFC even though i did that already.) I also re-installed both the .js script AND TamperMonkey itself with no luck.

I've asked others who use the script and they're having no problems, but at the same time they can't explain why i'm having problems either. So it sounds like it's something to do with my PC.

It's extremely frustrating since ALL i did was refresh the page and it all turned to crap after that lol.

I know it's a long shot since it's likely a computer/browser problem, but i figured i'd give it a shot & maybe u fellas might have an idea of what's going on and what may be a good way to fix this.

Thanks

(I'm running Win 8.1 if that matters at all.)

EDIT: Well I think I found out what the problem was. I didn't think about it before, but i tried Chrome in Incognito mode and the mfc-cb.js script works fine there. Which is GREAT, but also still confusing on why it works there but not regular Chrome. I'm guessing it's one of my extensions that's causing the problem. So i'm gonna go thru and disable them all (except for Tampermonkey) and try re-enabling them one by one.