Rake db:create failing in fresh rails 3.1 app

On the 3.1RC, I have created a new app, and when I try to run the db:create job I'm getting this:

[15:38][*********@***********:~/**********/db(master)]$ rake db:create
(in /Users/*********/*********)
rake aborted!
uninitialized constant Rake::DSL

any ideas appreci开发者_如何学Cated.

Use

gem "rake", "0.8.7"

In your gemfile, as stated rake 0.9.0 breaks a few things.