QQ互联新注册用户提交后出现这个页面！！！求助

注册设置为“QQ注册”前两项均关了后
用QQ互联新注册用户提交后就出现这个页面！

各位高手望能告诉我站出现什么问题了（是安装中出问题了吗？还是与插件冲突）
谢谢

Discuz! Database Error(1062) Duplicate entry '861-409' for key 'PRIMARY' INSERT INTO it577_foot SET `uid`='409' , `tid`='861' , `addtime`='1335775292'

PHP Debug

No.	File	Line	Code
1	forum.php	58	require(%s)
2	source/module/forum/forum_viewthread.php	880	include(%s)
3	data/template/10_diy_forum_viewthread.tpl.php	1	hookscriptoutput()
4	source/function/function_core.php	1140	hookscript()
5	source/function/function_core.php	1108	plugin_it577_foot_forum->viewthread_postbottom_output(Array)
6	source/plugin/it577_foot/it577_foot.class.php	36	discuz_database::insert(%s, Array)
7	source/class/discuz/discuz_database.php	60	discuz_database::query(%s, %s, %s, true)
8	source/class/discuz/discuz_database.php	136	db_driver_mysql->query(%s, %s, true)
9	source/class/db/db_driver_mysql.php	151	db_driver_mysql->halt(%s, %d, %s)
10	source/class/db/db_driver_mysql.php	218	break()