Flash Player does not install on Mac

[tillnovotny]

I tried to install Flash Player 11 on my Mac OS 10.8.4 (64-bit) System. During the installation I receive the error message that I should quit Safari, but Safari is already closed. What can I do?

[C_F_McBlob]

Download the offline installer here: http://fpdownload.macromedia.com/get/flashplayer/current/licensing/mac/install_flash_player_11_osx.d...

If it won't download directly, right click and "Save as"

Go to: Mac HD/Library/Internet Plugins

Trash the Flash Player.plugin file from there

Go to: Mac HD/Library/Application Support/Adobe

Trash the Flash Player folder (the whole folder)

Empty the trash

Reboot

Mount the DMG and run the installer.

BEFORE opening any Flash content in Safari, go to: Safari>Preferences, and click the Security tab to make sure "Allow all other plugins" is checked.