Comment: Localization problem...

Actually, YACS makes intensive usage of included files, and I don't understand why this particular one creates an issue. Maybe the file has been corrupted somewhere. To check this you could delete all files with the extension .mo.php in the sub-directories of i18n/locale. Don't worry about that action, these files are cached versions of the .mo translated binaries, and will be rebuilt by YACS on first load.