rem: return client.ucConverter.ConvertToUnicode(msg); 
add: try { return client.ucConverter.ConvertToUnicode(msg); } catch (ex) { dd ("caught exception " + ex + " converting " + msg + " to charset " + client.CHARSET); }  return msg; 
context: function toUnicode (msg){    if (!("ucConverter" in client))        return msg;        /* XXX set charset again to force the encoder to reset, see bug 114923 */    client.ucConverter.charset = client.CHARSET;    return client.ucConverter.ConvertToUnicode(msg);}
meta: 1622	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1622/7c2c48c295c5212a3264b8290dd6b32b4255d2b8/static.js/buggy/xul/content/static.js