掌上论坛安装出现错误!

错误提示如下：

Discuz! Database Error(1062) Duplicate entry 'mobileoemdaylogin' for key 2 INSERT INTO common_credit_rule VALUES ('', '掌上论坛签到','mobileoemdaylogin','1','0','1','0','0','2','0','0','0','0','0','0','');

PHP Debug

No.	File	Line	Code
1	admin.php	57	require(%s)
2	source/admincp/admincp_plugins.php	466	include_once(%s)
3	source/plugin/mobileoem/install.php	38	runquery()
4	source/function/function_plugin.php	236	discuz_database::query(%s)
5	source/class/discuz/discuz_database.php	136	db_driver_mysql->query(%s, false, false)
6	source/class/db/db_driver_mysql.php	153	db_driver_mysql->halt(%s, %d, %s)
7	source/class/db/db_driver_mysql.php	224	break()