I'm using 'sunspot_rails', '~> 2.0.0.pre.120415'
for Solr search in my rails app and deploy it on heroku (two separate application).
It's working fine on one application but throw error on other.
I have checked the heroku environment and found that - one app is on cedar stack and ruby version is 1.9.2p290. (Working fine) other one is on bamboo stack and ruby version is 1.9.2p180 (throw error)
So, Is this the ruby version problem or heroku stack problem ? Ruby version on development environment is 1.9.2p290.
Error
$ heroku run rake sunspot:reindex
Running rake sunspot:reindex attached to terminal... up, run.8567
rake aborted!
uninitialized constant Sunspot::Adapters::Registry::Forwardable
/app/.bundle/gems/ruby/1.9.1/gems/sunspot-2.0.0.pre.120925/lib/sunspot/adapters.rb:310:in `<class:Registry>'
/app/.bundle/gems/ruby/1.9.1/gems/sunspot-2.0.0.pre.120925/lib/sunspot/adapters.rb:309:in `<module:Adapters>'
/app/.bundle/gems/ruby/1.9.1/gems/sunspot-2.0.0.pre.120925/lib/sunspot/adapters.rb:34:in `<module:Sunspot>'
/app/.bundle/gems/ruby/1.9.1/gems/sunspot-2.0.0.pre.120925/lib/sunspot/adapters.rb:1:in `<top (required)>'
/app/.bundle/gems/ruby/1.9.1/gems/sunspot-2.0.0.pre.120925/lib/sunspot.rb:18:in `block in <top (required)>'
/app/.bundle/gems/ruby/1.9.1/gems/sunspot-2.0.0.pre.120925/lib/sunspot.rb:15:in `each'
/app/.bundle/gems/ruby/1.9.1/gems/sunspot-2.0.0.pre.120925/lib/sunspot.rb:15:in `<top (required)>'
/app/.bundle/gems/ruby/1.9.1/gems/sunspot_rails-2.0.0.pre.120925/lib/sunspot/rails.rb:1:in `<top (required)>'
/app/.bundle/gems/ruby/1.9.1/gems/sunspot_rails-2.0.0.pre.120925/lib/sunspot_rails.rb:6:in `<top (required)>'
/app/config/application.rb:7:in `<top (required)>'
/app/Rakefile:4:in `require'
/app/Rakefile:4:in `<top (required)>'
(See full trace by running task with --trace)