YoutubeScreenlet.py crashed with NameError in __main__: name '_' is not defined

[Emanuele Boncimino]

The screenlets crashes at the boot of the system.

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: screenlets-pack-all 0.1.6-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-1.5-generic 3.8.0-rc4
Uname: Linux 3.8.0-1-generic x86_64
ApportVersion: 2.8-0ubuntu2
Architecture: amd64
Date: Sat Jan 19 12:22:13 2013
ExecutablePath: /usr/share/screenlets/screenlets-pack-all/Youtube/YoutubeScreenlet.py
InstallationDate: Installed on 2012-12-28 (21 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
InterpreterPath: /usr/bin/python2.7
MarkForUpload: True
PackageArchitecture: all
ProcCmdline: python -u /usr/share/screenlets/screenlets-pack-all/Youtube/YoutubeScreenlet.py
PythonArgs: ['/usr/share/screenlets/screenlets-pack-all/Youtube/YoutubeScreenlet.py']
SourcePackage: indiv-screenlets
Title: YoutubeScreenlet.py crashed with NameError in __main__: name '_' is not defined
Traceback:
 Traceback (most recent call last):
   File "/usr/share/screenlets/screenlets-pack-all/Youtube/YoutubeScreenlet.py", line 50, in <module>
     screenlets.show_error(None,_("Internet connection is required to use this Screenlet"))
 NameError: name '_' is not defined
UpgradeStatus: Upgraded to raring on 2013-01-09 (9 days ago)
UserGroups: adm cdrom davfs2 dip fuse lpadmin plugdev sambashare sudo