Sybase Adapter

Hi I am trying to use Sybase adapter to communicate with Sybase ASE 12.5.

The database is configured for Thai Character set.
I am getting error while connecting to adapter as
“(20133) DB-Library error, Severity 8: Error in attempting to open a localization file: Unable to open file”

Can someone help? I have Sybase client installed on my machine, along with correct locales file.