In specialchars.php this line is wrong:
“ge” => Zend_Locale::getTranslation(‘ka’, ‘language’, WT_LOCALE),
It should be
“ka” => Zend_Locale::getTranslation(‘ka’, ‘language’, WT_LOCALE),
The changes in admin_pgv_wt.php are not needed. PGV never had a Georgian language file. That file is only used for PGV to kiwitrees conversion.