Upgrading from 0.3.1 to 0.4.2 - huh?

[F0iL]

Hello everybody.
I'm trying to upgrade Roundcube from 0.3.1 to 0.4.2 and have a problem

All needed files was rewritten (as UPGRADING manual says), MySQL schema was also updated.
/installer/ says that everything is okay, but when I try to open login page of Roundcube, I see nothing - an empty HTML page.

In Apache logs I can see the following:

Code: [Select]

[Tue Nov 23 15:24:25 2010] [error] [client 83.174.xxx.xxx] PHP Fatal error:  Cannot redeclare rcube_sess_unset() (previously d
eclared in /srv/www/webmail.xxx.xx/beta/program/include/main.inc:1574) in /srv/www/webmai.xxx.xx/beta/program/include
/session.inc on line 110

OS Debian Lenny 5.0.6
PHP Version 5.2.6-1
Apache/2.2.9

Don't know what to do. Where can be the error?

[alec]

Remove all files from program/include and copy to it the new ones (again). You didn't upgrade properly. Other directories could be not properly updated too.

[F0iL]

I have really rewritten /program folder when I was upgrading, as it was said in manual.
I've tried few times more, but the result was unsuccessful.

Finally, I took db, main and plugin configs and put them with new roundcube files. Everything now is fine. thank you.