phpGroupWare Japanese Project

管理者アカウント作成画面でアカウントを作成しよう
とすると以下の表示になります
Warning: Invalid argument supplied for foreach() in /home/httpd/html/phpgroupware/phpgwapi/inc/class.hooks.inc.php on line 80

Warning: Invalid argument supplied for foreach() in /home/httpd/html/phpgroupware/phpgwapi/inc/class.hooks.inc.php on line 80
Database error: Invalid SQL: INSERT INTO phpgw_preferences(preference_owner,preference_app,preference_value) VALUES(-2,'common','a:12:{s:9:\"maxmatchs\";s:2:\"15\";s:12:\"template_set\";s:5:\"idots\";s:5:\"theme\";s:9:\"submarine\";s:13:\"navbar_format\";s:5:\"icons\";s:9:\"tz_offset\";s:0:\"\";s:10:\"dateformat\";s:5:\"Y/m/d\";s:10:\"timeformat\";s:2:\"12\";s:7:\"country\";s:2:\"JP\";s:4:\"lang\";s:2:\"ja\";s:11:\"default_app\";s:0:\"\";s:8:\"currency\";s:2:\"￥\";s:9:\"show_help\";s:1:\"1\";}')
PostgreSQL Error: 1 (ERROR: invalid UTF-8 byte sequence detected near byte 0xa1)

File: 238
Line: /home/httpd/html/phpgroupware/setup/setup_demo.php
Session halted.
なんとかご教授おねがいします