Don't start after 10.04->10.10 upgrade

[O. Bender]

Binary package hint: gozerbot

1) $ lsb_release -rd
Description: Ubuntu 10.10
Release: 10.10

2) Tried both 10.04 and 10.10 packages (i tried to downgrade gozerbot package, it didn't help):
Ubuntu.10.04.repository/pool/universe/g/gozerbot/gozerbot_0.9.1.3-4_all.deb
Ubuntu.10.10.repository/pool/universe/g/gozerbot/gozerbot_0.9.1.3-4_all.deb

3) I expected it (script in /etc/init.d) would start after upgrade.

4) It didn't start.

Logs were rather silent:
$ tail -5 /var/log/gozerbot.log
[2010-12-02 15:58:55,904] (GOZERBOT) STARTING VERSION 0.9.1.3
[2010-12-02 15:58:55,914] (eggs) scanning /var/lib/gozerbot
[2010-12-02 15:58:55,916] (eggs) loaded:
[2010-12-02 15:58:55,916] (eggs) scanning /var/lib/gozerbot/gozernest
[2010-12-02 15:58:55,918] (eggs) loaded:

If I run it in terminal under user 'gozerbot' it printed:

$ /usr/bin/gozerbot
[2010-12-02 16:10:53,970] (GOZERBOT) STARTING VERSION 0.9.1.3
[2010-12-02 16:10:53,970] (eggs) scanning /var/lib/gozerbot
[2010-12-02 16:10:53,971] (eggs) loaded:
[2010-12-02 16:10:53,972] (eggs) scanning /var/lib/gozerbot/gozernest
[2010-12-02 16:10:53,974] (eggs) loaded:
/usr/bin/gozerbot:160 <module> | /usr/lib/pymodules/python2.6/gozerbot/database/alchemy.py:178 <module> | /usr/lib/python2.6/dist-packages/sqlalchemy/ext/declarative.py:1017 __init__ | /usr/lib/python2.6/dist-packages/sqlalchemy/ext/declarative.py:863 _as_declarative | <type 'exceptions.TypeError'>: Error when calling the metaclass bases
    unhashable type: 'list'
$

Here is the line 160 from /usr/bin/gozerbot:
  from gozerbot.database.alchemy import startmaindb

I _fixed_ the problem only by installing package 'sqlalchemy' from 10.04
(downgrade from 0.6.3-2 to 0.5.8-1).