启用QQ互联插件出现Discuz! System Error

不知道这个是什么情况，请大家帮忙看看，谢谢了。

Discuz! System Error您不能安装此服务
PHP Debug

No.	File	Line	Code
1	admin.php	57	require(%s)
2	source/admincp/admincp_plugins.php	223	include(%s)
3	source/plugin/qqconnect/switch.php	21	Cloud_Register->__construct(%s, %d, %s)
4	source/class/class_cloudregister.php	35	Cloud_Register->step_appOpenFormView()
5	source/class/class_cloudregister.php	59	Cloud_Service_Client_Cloud->appOpenFormView(%s, %s, %s)
6	source/plugin/manyou/Service/Client/Cloud.php	68	Cloud_Service_Client_Restful->_callMethod(%s, Array)
7	source/plugin/manyou/Service/Client/Restful.php	154	Cloud_Service_Client_Restful->_parseResponse(%s, false, false)
8	source/plugin/manyou/Service/Client/Restful.php	179	break()

求大神帮忙看看。。

ALTER TABLE `pre_common_connect_guest` ADD `conuintoken` CHAR( 32 ) NOT NULL ;
ALTER TABLE `pre_common_member_connect` ADD `conuintoken` CHAR( 32 ) NOT NULL ;
到数据库执行这个sql语句