I created a new plugin based on the English version.
Most of the Phrases I translated are working fine, but some of them aren't.
Just for the demonstration of the problem, and to make sure that I didn't mess the file, I put a clean version of language.php into the plugin folder and only changed two phrases - one which works fine and another one which doesn't.
I'm using J2.5.9, CB1.9, GJ270.
Please see the attached files:
1) the translation result as it renders: one part which works, working override from the configuration at the backend and a non working translation.
2) Screen shot of the working translation in the language.php file
3) Screen shot of the phrase which doesn't work
4) Screen shot of the working override.
Thanks,
Emanuel.