Installing CE?

[lordmortis]

I followed the documentation here:

http://sites.google.com/a/curbly.com/communityengine/installation

And ran into the following error:

% script/generate plugin_migration
/Users/lordmortis/Projects/test/vendor/plugins/engines/lib/engines/
rails_extensions/routing.rb:69:in `from_plugin': You have a nil object
when you didn't expect it! (NoMethodError)
The error occurred while evaluating nil.routes_path from /Users/
lordmortis/Projects/test/config/routes.rb:41
from /Library/Ruby/Gems/1.8/gems/actionpack-2.3.2/lib/
action_controller/routing/route_set.rb:226:in `draw'
from /Users/lordmortis/Projects/test/config/routes.rb:1
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.2/lib/
active_support/dependencies.rb:145:in
`load_without_new_constant_marking'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.2/lib/
active_support/dependencies.rb:145:in `load'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.2/lib/
active_support/dependencies.rb:521:in `new_constants_in'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.2/lib/
active_support/dependencies.rb:145:in `load'
from /Library/Ruby/Gems/1.8/gems/actionpack-2.3.2/lib/
action_controller/routing/route_set.rb:286:in `load_routes!'
... 10 levels...
from /Library/Ruby/Gems/1.8/gems/rails-2.3.2/lib/commands/
generate.rb:1
from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in
`require'
from script/generate:3

What am I doing wrong?