Script Error

I know tons of people are having issues and problems with the new update, however, this was happening to me before the update, so I don't believe the update is to blame. I am getting a script error message over and over and over from a walk replacer script I don't even have. Is there any way to stop it? I try and close it, but it just pops right back up. It's becoming annoying since I have tried everything, and I have talked to everyone in game who I thought might help. Thanks.