I am currently stuck with version .265, I've deduced that .265 is the reason for my my browser freezing up. I have deleted the cache, folder, uninstalled the application...yet when I go to reinstall Flash it is showing up as .265 still. Then the freezing starts again. In trying to fix this problem I have to terminate firefox, disconnect my internet connection, disable the addon. At that point everything works fine. I've browsed through several search topics but nothing seems to help.
Try running the uninstaller http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html
If this still does not let you install build 271, please list the files in
Please also post the contents of the FlashInstall.log file from one of the above folders.