PhpFreeChat and module i18n(Internationalization)

Windows XP SP2
Apache/1.3.33 installed on local PC
Drupal 5.5
Firefox 2.0.0.9 and IE6.0

PhpFreeChat works fine on clear installation of Drupal. But it does not work with module i18n installed. It only shows endless animation "Chat loading ... Please wait".

Firefox Error Console shows 2 js errors:
Error: browserSupportsCookies is not defined
Source File: http://mysite4/?q=en/node/1
Line: 240

Error: pfcClient is not defined
Source File: http://mysite4/?q=en/node/1
Line: 210

Parameters: Array
(
[data_private_path] => z:\home\mysite4\www\files\phpfreechat\private
[data_public_url] => http://mysite4/files/phpfreechat/public
[data_public_path] => z:\home\mysite4\www\files\phpfreechat\public
[theme_url] => http://mysite4/sites/all/modules/phpfreechat/extras/themes
[theme_path] => z:\home\mysite4\www\sites\all\modules\phpfreechat\extras\themes
[theme] => drupal
[serverid] => 164546f60261c7e4be0c5f5f9aaeec86
[server_script_url] => http://mysite4/sites/all/modules/phpfreechat/handler.php
[server_script_path] => z:\home\mysite4\www\sites\all\modules\phpfreechat\handler.php
[frozen_nick] => 1
[connect_at_startup] => 1
[start_minimized] =>
[nickmarker] => 1
[clock] => 1
[openlinknewwindow] => 1
[showwhosonline] => 1
[showsmileys] => 1
[btn_sh_whosonline] => 1
[btn_sh_smileys] => 1
[language] => en_US
[debug] =>
[title] => Chat page title
[channels] => Array
(
[0] => Chat page title
)

[nick] => Anonymous246
[nickmeta] => Array
(
[drupal_base_url] => http://mysite4
[drupal_user_uid] => 0
)

)

Session: Array
(
[language] => en
[drupal_user] => stdClass Object
(
[uid] => 0
[hostname] => 127.0.0.1
[roles] => Array
(
[1] => anonymous user
)

[session] =>
[cache] => 0
)

[pfcuserconfig_164546f60261c7e4be0c5f5f9aaeec86_nick] =>
[pfcuserconfig_164546f60261c7e4be0c5f5f9aaeec86_active] =>
[pfcuserconfig_164546f60261c7e4be0c5f5f9aaeec86_channels] => Array
(
)

[pfcuserconfig_164546f60261c7e4be0c5f5f9aaeec86_privmsg] => Array
(
)

)

Cookies: Array
(
[SESSc55445c28b20080cb9f92cb161f1a4cc] => 3d2769c2ee4a3be24c2a5ce050394686
)