starttime DESC LIMIT 0,3 错误

MySQL Error
Message: MySQL Query Error
SQL: SELECT id,subject FROM cdb_announcements ORDER BY starttime DESC LIMIT 0,3
Error: Table 'homegbk.cdb_announcements' doesn't exist
Errno.: 1146

我安装好后，装了风格包，就出现这样的错误。。怎么回事呢？