[typo] typo and mysql 5.0.15

[clint]

Does typo work with mysql 5.0.15?

When I try to access http://localhost:3000 I recieve the following:
Clint:~/temp/rails/typo clint$ script/server -e production
=> Rails application started on http://0.0.0.0:3000
=> Ctrl-C to shutdown server; call with --help for options
[2005-11-07 20:58:10] INFO  WEBrick 1.3.1
[2005-11-07 20:58:10] INFO  ruby 1.8.2 (2004-12-25) [powerpc-darwin8.0]
[2005-11-07 20:58:10] INFO  WEBrick::HTTPServer#start: pid=3047 port=3000
#<ActiveRecord::StatementInvalid: Can't create/write to file
'/var/tmp/#sql_975_0.MYI' (Errcode: 13): SHOW FIELDS FROM sessions>

I am using mysql version:
mysql  Ver 14.12 Distrib 5.0.15, for apple-darwin7.9.0 (powerpc) using
readline 5.0

I update to the latest version of typo (725) from svn.

I created a new database called typo using:
mysql -u root -p typo < schema.mysql.sql

my database.yml file looks like:
login: &login
  adapter: mysql
  host: localhost
  username: root
  password:


development:
  database: typo_dev
  <<: *login

test:
  database: typo_tests
  <<: *login

production:
  database: typo
  <<: *login


what am i missing?

Thanks in advance,
clint