I can't play Flash videos on YouTube in my Google Chrome. I have the latest version of Google Chrome (31.0.1650.57 m) and Adobe Flash Player plugin is activated, but instead of the video I see a black rectangle. I need help.
When right clicked on on black square I see 2 options:
Movie not loaded and
About Adobe Flash Player
The problem was in browser cache. After cleaning it out everything became to work as usual.