Build Error after upgrading to 3.1.0.GA

Hey,

I've just upgraded to 3.1.0.GA on Windows 7 64-bit and I can't build Android apps anymore. I also di all the updates which i was asked to do by studio (node.js, cli, etc.)

I get the following error:

Titanium Command-Line Interface, CLI version 3.1.0, Titanium SDK version 3.1.0.GA
Copyright (c) 2012-2013, Appcelerator, Inc.  All Rights Reserved.
[DEBUG] :  No project level plugins to load
 
Please report bugs to http://jira.appcelerator.org/
 
[INFO] :   Running build process:  python "C:\Users\mwu\AppData\Roaming\Titanium\mobilesdk\win32\3.1.0.GA\android\builder.py" "install" "Communote" "D:\mwu\Android\android-sdk" "D:\mwu\workspaces\titanium\communote-mobile-titanium" "com.communote.mobile" "1"
[DEBUG] :  Loaded plugin hooks:
[DEBUG] :  C:\Users\mwu\AppData\Roaming\Titanium\mobilesdk\win32\3.1.0.GA\cli\hooks\plugins.js
[DEBUG] :  C:\Users\mwu\AppData\Roaming\Titanium\mobilesdk\win32\3.1.0.GA\android\cli\hooks\install.js
[DEBUG] :  C:\Users\mwu\AppData\Roaming\Titanium\mobilesdk\win32\3.1.0.GA\android\cli\hooks\run.js
  File "C:\Users\mwu\AppData\Roaming\Titanium\mobilesdk\win32\3.1.0.GA\android\builder.py", line 139
    print "[DEBUG] Signal %s received. Terminating the logcat process." % signum
                                                                      ^
SyntaxError: invalid syntax
[ERROR] :  Build process exited with code 1
[ERROR] :  Project failed to build after 200ms