Hi, The Square is a beta version and still in testing. You need to Uninstall it if you want the latest released version.
Even tho you have a 64bit OS, you need to use the 32bit browser with any Flash Player version other than Square.
Download and SAVE to your Desktop the Uninstaller:
Download and SAVE to your Desktop the Installer(s)
http://www.adobe.com/products/flashplayer/fp_distribution3.html Use the EXE Installer for Win/IE and Win/plugin
Use the Administrator Account
Close all browser windows, disable any instant messengers in the system tray
Disable any realtime anti-virus
Run the Uninstaller and then reboot
Run the Installer(s) and reboot.
Reenable any that was disabled.
Test here with browser(s)
You can print this out to make it easier.