No translation file found for domain

[Stefan]

The calendar indicator crashes on (every) system startup showing the crash reporter dialog and repeatedly using the relaunch button. If I decide to leave it closed and then start it manually it works fine.

The crash log contains the following information (ProcMaps and ProcStatus stripped):

ProblemType: Crash
CrashCounter: 1
CurrentDesktop: Unity
Date: Wed Apr 30 20:37:28 2014
ExecutablePath: /opt/extras.ubuntu.com/calendar-indicator/bin/calendar-indicator
ExecutableTimestamp: 1397410225
InterpreterPath: /usr/bin/python3.4
ProcCmdline: /usr/bin/python3 /opt/extras.ubuntu.com/calendar-indicator/bin/calendar-indicator
ProcCwd: /home/stefan
ProcEnviron:
 LANGUAGE=en_US
 LC_TIME=de_AT.UTF-8
 LC_MONETARY=de_AT.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LC_ADDRESS=de_AT.UTF-8
 LC_TELEPHONE=de_AT.UTF-8
 LANG=en_US.UTF-8
 SHELL=/bin/bash
 LC_NAME=de_AT.UTF-8
 LC_MEASUREMENT=de_AT.UTF-8
 LC_IDENTIFICATION=de_AT.UTF-8
 LC_NUMERIC=de_AT.UTF-8
 LC_PAPER=de_AT.UTF-8
PythonArgs: ['/opt/extras.ubuntu.com/calendar-indicator/bin/calendar-indicator']
Traceback:
 Traceback (most recent call last):
   File "/opt/extras.ubuntu.com/calendar-indicator/share/calendar-indicator/comun.py", line 91, in <module>
     language = gettext.translation(APP, LANGDIR, [current_locale])
   File "/usr/lib/python3.4/gettext.py", line 416, in translation
     raise OSError(ENOENT, 'No translation file found for domain', domain)
 FileNotFoundError: [Errno 2] No translation file found for domain: 'calendar-indicator'

 During handling of the above exception, another exception occurred:

 Traceback (most recent call last):
   File "/opt/extras.ubuntu.com/calendar-indicator/bin/calendar-indicator", line 37, in <module>
     import comun
   File "/opt/extras.ubuntu.com/calendar-indicator/share/calendar-indicator/comun.py", line 95, in <module>
     print(e)
 OSError: [Errno 5] Input/output error

BTW: I'm using Ubuntu 14.04.