Alfred 2 fails to launch after upgrade to Yosemite I just upgraded to Mac OS X Yosemite 10.10 and Alfred 2 fails to launch.

In Activity Monitor, it reports that it is not responding, and the only thing I can do is Force Quit it.

Console doesn't report any messages except the kill message from my force quit.

Any advice would be appreciated.
Don't use Alfred myself so I can't give a specific answer.

Something I would try though is using opensnoop to see if I can work out where it is failing.

If you type sudo opensnoop | grep alfred into a Terminal it'll show you all the files that Alfred is touching. That might help you identify where it is crashing, for example if it is a corrupt plist file.