rail_upgrade gem fails to recognise environment.rb

[Rob Aldred]

The rails 3 upgrade gem is refusing to generate a new application rb for a project i am trying to get onto rails 3.

Running: rake rails:upgrade:configuration --trace

Results in the following error:

There doesn't seem to be a real environment.rb in your app.  Are you sure config/environment.rb has the right contents?
/Users/robaldred/Sites/StardotSite/stardoteditor/vendor/plugins/rails_upgrade/lib/tasks/../../lib/new_configuration_generator.rb:29:in `generate_new_application_rb'
/Users/robaldred/Sites/StardotSite/stardoteditor/vendor/plugins/rails_upgrade/lib/tasks/rails_upgrade_tasks.rake:37

Seems like the regex used to determine the environment.rb file is valid is failing to match the content in the file, please see the attached, it looks pretty normal to me. What am I missing, for now  will just make an application.rb manually.

Rob