uninitialized constant Gateway::Bogus

I'm running with the spree 0.9.4 gem and when I try to run:
$rake db:migrate

I get the following error:

---

$ sudo -u farviewdev rake --trace db:migrate
(in /opt/sites/spree9)
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
Loading haml-edge gem.
rake aborted!
uninitialized constant Gateway::Bogus
/Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:105:in const_missing' /opt/sites/spree9/vendor/extensions/subscriptions/subscriptions_extension.rb:106:inactivate'
/Library/Ruby/Gems/1.8/gems/spree-0.9.4/lib/spree/extension.rb:34:in activate' /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/core_ext/symbol.rb:11:insend'
/Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/core_ext/symbol.rb:11:in to_proc' /Library/Ruby/Gems/1.8/gems/spree-0.9.4/lib/spree/extension_loader.rb:95:ineach'
/Library/Ruby/Gems/1.8/gems/spree-0.9.4/lib/spree/extension_loader.rb:95:in activate_extensions' /Library/Ruby/Gems/1.8/gems/spree-0.9.4/lib/spree/initializer.rb:132:inafter_initialize'
/Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:179:in process' /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:insend'
/Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in run' /Library/Ruby/Gems/1.8/gems/spree-0.9.4/lib/spree/initializer.rb:97:inrun'
/opt/sites/spree9/config/environment.rb:13
/Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in gem_original_require' /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:inrequire'
/Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in require' /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:innew_constants_in'
/Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in require' /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/tasks/misc.rake:4 /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:incall'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in execute' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:ineach'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in execute' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:ininvoke_with_call_chain'
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:in synchronize' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:ininvoke_with_call_chain'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:607:in invoke_prerequisites' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:ineach'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in invoke_prerequisites' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:596:ininvoke_with_call_chain'
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:in synchronize' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:ininvoke_with_call_chain'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:583:in invoke' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2051:ininvoke_task'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in top_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:ineach'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in top_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:instandard_exception_handling'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:in top_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:inrun'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in standard_exception_handling' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:inrun'
/Library/Ruby/Gems/1.8/gems/rake-0.8.7/bin/rake:31
/usr/bin/rake:19:in `load'

/usr/bin/rake:19

Thoughts on what might be causing this and how I can get around it?