Discuz2.5升级到Discu4.0问题.请高手帮忙(急)

按照论坛的方法https://discuz.dismall.com/viewthread.php?tid=193607
不行出现下面的情况:
Discuz! info: MySQL Query Error

Time: 2006-6-4 3:35am
Script: /bbs/index.php

SQL: SELECT fieldid, invisible, title, description, required, unchangeable, selective, choices FROM cdb_profilefields WHERE available='1' AND required='1' ORDER BY displayorder
Error: Unknown column 'unchangeable' in 'field list'
程序文件跟数据库有冲突，请使用正确的程序文件上传上去覆盖

Similar error report has beed dispatched to administrator before.
请大家帮帮忙.谢谢