Nothing Happened Rated 1 out of 5 stars

I restarted the browser as instructed and nothign happened. I opened the Add-ons Manager and it was listed. Another poster said that the plug-ins tab in the controls would have a way to enable and disable it or whatever. It didn't even appear there. I could find no controls for it. I went to pages I know have flash and they acted just as they usually do. This is on Firefox 28 in Elementary OS, an Ubuntu variant. Maybe this works in Windoz or Mac OS (oh my god I spent WHAT on this machine!) X.