Since I have gone to Yosemite, I have not been able to use the standard procedure to install or update Flash. The installer(s) downloads fine, then when I run the installer it stalls (never completes), usually at the 30% complete stage. And when it stall, I attempt to abort the installer and everything indicates that the abort succeeded, but it never shuts down, I have to force a quit. I have to jump through hoops to get the latest standalone version, which does install. But every single week when Flash has (yet another annoying) update, I have to go through the same procedures. I have uninstalled, reinstalled, rebooted, repeatedly in every order possible. This is getting sooo old and time consuming, and there isn't any easy to find resolution. PLEASE HELP!!!