[Gambas-user] Language [continued]

[Wolfgang, dl7nb]

I have translated all my texts to English(UK) which gives me the files
en_GB.mo
en_GB.po
----------------
"$locale -a" tell me that I have "en_GB.utf8" installed.
----------------
Here is my _init()

Static Public Sub _init()

   System.Language = "en_GB.utf8"

End
----------------
When I start the program, I get an error :
gbx3: warning: cannot switch to language 'en_GB.utf8': No such file or 
directory. Did you install the corresponding locale packages?

Nothing is translated. Where is my mistake???

Please, help me!

Wolfgang
P.S.:
here is my system information:
[System]
Gambas=3.6.90
OperatingSystem=Linux
Kernel=3.4.90
Architecture=arm
Distribution=Ubuntu 14.04.1 LTS
Desktop=LXDE
Theme=QGtk
Language=de_CH.UTF-8
Memory=874M
[Libraries]
Cairo=libcairo.so.2.11301.0
Curl=libcurl.so.4.3.0
DBus=libdbus-1.so.3.7.6
GStreamer=libgstreamer-0.10.so.0.30.0
GStreamer=libgstreamer-1.0.so.0.204.0
GTK+3=libgtk-3.so.0.1000.8
GTK+=libgtk-x11-2.0.so.0.2400.23
OpenGL=libGL.so.1.2.0
Poppler=libpoppler.so.44.0.0
Qt4=libQtCore.so.4.8.6
SDL=libSDL-1.2.so.0.11.4