Emacs startup warning

Question

I am using Emacs for Mac OS X 24.2. Once the emacs was stuck and then I kill the process, but when I reopened it, some warnings were showed below：

warning: desktop file appears to be in use by PID 200.
Using it may cause conflicts. Use it anyway? (y or n)

From then on the message shows every time when I open Emacs, so what we should do to fix it? I am really annoyed for that. By the way, my os is Mac OS X 10.7.5

Answer 1

It often happens when your emacs exited accidentally last time. You can try this:

Find and delete this file: .emacs.desktop.lock. (This is the value of desktop-base-lock-name and can be customized.) It is located in your user-emacs-directory, usually .emacs.d in your home directory.