Alt-X does not work in GNU Emacs

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Start Growl.
2. Start GNU Emacs.
3. Type Alt-X.

What is the expected output? What do you see instead?
I expected Emacs to show "M-x " in its minibuffer.  Instead, it shows nothing 
in its minibuffer.

What version of the product are you using? On what operating system?
I'm using Growl for Windows v2.0.9 on Windows XP.

Please provide any additional information below.
This is important to me because Alt-X is used to enter extended commands.  I'd 
like a way to prevent Growl from capturing Alt-X or pass it through to GNU 
Emacs when no notification is displayed.

Original issue reported on code.google.com by [email protected] on 10 Aug 2012 at 10:21

[webcoyote]

Because it took me a long time to find, I thought I'd help the next person! Edit the configuration file, which can be found here:

%USERPROFILE%\Local Settings\Application Data\Growl\2.0.0.0\user.config

and change the KeyboardShortcutCloseLast setting so that it doesn't steal Alt-X.

[phatcabbage]

@GoogleCodeExporter @webcoyote Thank you all so much! I didn't know what had hijacked Alt-X and it was driving me crazy!