Ruby on Rails

I've created a new app with rails 3.1
Run rake db:migrate and:

== DeviseCreateUsers: migrating ==============================================
== DeviseCreateUsers: migrated (0.0000s) =====================================

rake aborted!
An error has occurred, this and all later migrations canceled:

private method `split' called for #<Arel::InsertManager:0x48fa3b39>

What's the problem?

--
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To post to this group, send email to rubyonrails-talk@googlegroups.com.
To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.