Redmine

Using redmine development 1669.

1. created mysql redmine database
2. rake db:migrate RAILS_ENV="production"
3. launched mongrel
4. in browser: http://127.0.0.1:3000
5. logged in as admin/admin
6. click on Administration menu
7. selected Italiano from the drop-down list
8. click on the Load default configuration button

At this point I got the error flash:

Default configuration could not be loaded: Validation failed: Name activerecord_error_invalid

If otherwise in step 7 I accept the default English language, all is fine.
So I suspect this error is related to the italian language translation.
Some help?