ror@christine:~/www/webofhands$ rake db:migrate
(in /home/ror/www/webofhands)
== AddBlahToUsers: migrating ==================================================
-- add_column("users", "can_approve", "bool")
rake aborted!
You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occured while evaluating nil.[]

(See full trace by running task with --trace)
ror@christine:~/www/webofhands$