Quicktime Firefox Caption Controls Quicktime Was Working Fine On Firefox (playing Games,) And Suddenly Stopped. What Can I Do To Get It Back?

Quicktime was working fine on firefox (playing games,) and suddenly stopped. What can I do to get it back? - quicktime firefox caption controls

I have not changed settings, tried to download again, no idea what happened. I can not get firefox or in the shock wave, but could not. The strange thing with QuickTime is how it just stopped working one morning .... Thanks for all ideas.