This problem defies all logic
I recently installed the most current, updated version of Evernote and noticed that its new Menu Bar Helper wasn't working. I could click and open it, but nothing in it was clickable (voice notes, quick text note, screen capture, gear icon for setttings)...nothing.
So, for step one I booted into Safe Mode and then launched "only" Evernote. This fixed it...the Menu Bar Helper worked just fine. Then I manually launched every app I normally have automatically load at startup...one app at a time, and after each app loaded I checked to see if the Evernote Helper was working. I finished loading all apps and the Evernote Helper was still working.
OK...I figured I'd try that process in reverse, so I did a normal boot, confirmed the Evernote Helper was not working, then one by one, I closed every open app, checking the Evernote Helper after each one. When I was finished closing all the apps the Evernote Helper was still not running.
One of these two processes of elimination should have found the culprit causing the Evernote Helper to not function. I also quit a few processes I knew were associated with apps, even though I'd closed the actual app. If anyone else has a suggestion, I'd love to hear it. Thanks!
MacBook Air, OS X Mountain Lion, + 24-inch LED Cinema Display