pro sites language file

Hi,

I used poedit to translate pro sites language file,
1. renamed the file to psts-zh_TW.mo,
2. uploaded to /pro-sites-files/languages,
3. added: define ('WPLANG', 'zh_TW'); in wp-config.php
But it didn't work.

During the translation, when i saved as the file to zh_TW, poedit shows error message, pls take a look at the attached logs.txt. I ignored the message and still translated the language file.
I am not sure whether it is the reason why the mo file didn't work. Please check.