Can't open Audacity

I’m trying to open Audacity running Mac OS X Yosemite and it says that there’s another Audacity running while there isn’t another one running.
And it won’t close the warning window and it won’t open the app.

Mac OS X 10.10.1
iMac 21.5 in Late 2009
12 GB memory

This post may have the answer:

Thanks a lot, but both didn’t work.

Did you quit ensure Audacity was not running in Activity Monitor before editing audacity.cfg?

2.0.6 does not even officially support Yosemite. Make sure Audacity is not running in Activity Monitor, edit down audacity.cfg to NewPrefsInitialized=1, then try the latest 2.1.0-alpha build at the top of this page:

If the same thing happens with 2.1.0-alpha, could you open Finder, choose Go > Go to Folder and type:


If there are any recent crash or hang reports there for Audacity, please attach them. Please see here for how to attach files: