I am trying to update my Flash Player. During the install process it says I need to close the following program: com.apple.WebKit.Plugin.64 I have no idea what this is or how to close it. I am running Safari 8.0.2 in OS X Yosemite. Any help would be appreciated. Thanks!
i too was trying to update adobe and it kept stopping, saying i needed to close
so i would say to try and make sure safari is closed for all account users using your computer!!
The old addage "when in doubt, reboot" is still pretty solid advice as well.