Play in Web button not working

I'm working on a project, converting a game from TGE to Torque 3D. Early last week, I was able to get a build up and running on the web and everything was working fine. Between that Tuesday and Friday, something got changed and caused the Play in Web button to gray out on the Torque Toolbox, and the builds no longer work online. We get an error while building: "Unable to load web plugin, couldn't grab the needed mozilla plugin info for generating a web installer"

I've compared our project to a working, new Full Template project, and I can't see anything missing. There are a lot of extra Torsion files in the Game folder, but I can't tell if that would mess the project up again. Is it something to do with naming conventions? Because out Project Folder name is different from our .exe name. That's the biggest difference between the projects. Thanks!