Why won't the Adobe support page detect that I have Flash Player on my computer?

[Abigail_S__F_]

Hi!

I've tried installing and uninstalling Flash Player on several occasions and restarting my computer but it still doesn't work. Some videos on Youtube don't work. When I went to view the articles on the Adobe website about troubleshooting installation, the website can't even detect I have Flash Player or use it. I have a apple computer, my operating system is OS X 10.9 and I use Safari 7.0. My version of Flash Player is 11.9.900.170. What do I do?

[C_F_McBlob]

Safari>Preferences>Security

Is "Allow Plugins" checked?

If it is, follow the illustrated instructions here: http://forums.adobe.com/thread/1343084 to do a complete "clean install".

[Abigail_S__F_]

Thanks very much for your help. I had to download Java and then go in the Safari Preferences, Manage Website Settings and adjust the settings for Java to Always Allow plugins for Java. I don't know why, but Java wasn't installed. It works now.

[C_F_McBlob]

OS 10.9 "Mavericks" comes with Java 7 but it DOESN'T have Java 6. I don't know why. I had to download it to get ANY of my CS5 or CS6 apps to work.