My Firefox browser will not open. When I troubleshoot it, it states that I may have compatibility issues. I've tried every prior version. Tried a system restore to an earlier point--also didn't work. I tried to uninstall and reinstall Firefox; however, the uninstaller didn't correctly unintstall the program so I'm stuck where I'm at. At this point I am no longer able to open Firefox, but it does show on my programs list. It will not uninstall, repair, or anything. Any suggestions? (Besides use another web-browser)