求助！

论坛安装完毕后发新贴测试，提示：

Discuz! info: MySQL Query Error

User: zjd25
Time: 2006-12-25 2:38pm
Script: /g31/post.php

SQL: select count(*) FROM cdb_postban where (fid='3' or fid='65535')

AND username='zjd25' AND timelimit > 1167028687
Error: Table 'dkp.cdb_postban' doesn't exist
数据表缺失,请恢复备份数据

请问如何解决？