Then it looks like you - for some reason - have an old version of language-selector-common and language-selector-gnome. Try to simply run
sudo apt-get update sudo apt-get upgrade
After that, please check that you have the latest version (0.110) by running
dpkg -l language-selector-*
Finally, please let us know if the warning messages you mention in this bug report are still there.
Then it looks like you - for some reason - have an old version of language- selector- common and language- selector- gnome. Try to simply run
sudo apt-get update
sudo apt-get upgrade
After that, please check that you have the latest version (0.110) by running
dpkg -l language-selector-*
Finally, please let us know if the warning messages you mention in this bug report are still there.