Hi I have the some issue: I tried the following in addstuffhomepage.php
function hookRightColumn($params)
{
global $smarty;
$srcFile=Configuration::get($this->name.'_filepath');
if ($srcFile=='') {
$srcFile="mystuff.html";
}
// Add this code
$id_language = $params['cookie']->id_lang;
$lang_iso = Language::getIsoById($id_language);
$path_parts = pathinfo($srcFile);
$srcFile = $path_parts['filename']."_".$lang_iso.".".$path_parts['extension'];
Hope this help. ------------------------