[support] any other way to import localisation files ?

is there any other way way of importing .po file instead of using the admin control panel. i have tried several times to import other languages but my sever keeps timing out and I am receiving a lot of error 500. Server error! The server encountered an internal error and was unable to complete your request. Error message: Premature end of script headers: index.php If you think this is a server error, please contact the webmaster. Error 500 Larry --