gistfile1.txt

=> Booting WEBrick
=> Rails 3.2.0 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/core_ext/module/aliasing.rb:31:in `alias_method': undefined method `before_dispatch' for class `Rails::Rack::Logger' (NameError)
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/core_ext/module/aliasing.rb:31:in `alias_method_chain'
	from /Users/omnix/Documents/development/rails/reznet/config/initializers/quiet_assets.rb:6:in `block in <top (required)>'
	from /Users/omnix/Documents/development/rails/reznet/config/initializers/quiet_assets.rb:2:in `class_eval'
	from /Users/omnix/Documents/development/rails/reznet/config/initializers/quiet_assets.rb:2:in `<top (required)>'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:245:in `load'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:245:in `block in load'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:236:in `load_dependency'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:245:in `load'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/engine.rb:588:in `block (2 levels) in <class:Engine>'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/engine.rb:587:in `each'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/engine.rb:587:in `block in <class:Engine>'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/initializable.rb:30:in `instance_exec'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/initializable.rb:30:in `run'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/initializable.rb:55:in `block in run_initializers'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/initializable.rb:54:in `each'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/initializable.rb:54:in `run_initializers'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/application.rb:136:in `initialize!'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/railtie/configurable.rb:30:in `method_missing'
	from /Users/omnix/Documents/development/rails/reznet/config/environment.rb:5:in `<top (required)>'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `block in require'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:236:in `load_dependency'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
	from /Users/omnix/Documents/development/rails/reznet/config.ru:4:in `block in <main>'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/rack-1.4.1/lib/rack/builder.rb:51:in `instance_eval'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/rack-1.4.1/lib/rack/builder.rb:51:in `initialize'
	from /Users/omnix/Documents/development/rails/reznet/config.ru:1:in `new'
	from /Users/omnix/Documents/development/rails/reznet/config.ru:1:in `<main>'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/rack-1.4.1/lib/rack/builder.rb:40:in `eval'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/rack-1.4.1/lib/rack/builder.rb:40:in `parse_file'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/rack-1.4.1/lib/rack/server.rb:200:in `app'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/commands/server.rb:46:in `app'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/rack-1.4.1/lib/rack/server.rb:301:in `wrapped_app'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/rack-1.4.1/lib/rack/server.rb:252:in `start'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/commands/server.rb:70:in `start'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/commands.rb:55:in `block in <top (required)>'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/commands.rb:50:in `tap'
	from /Users/omnix/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.0/lib/rails/commands.rb:50:in `<top (required)>'
	from script/rails:6:in `require'
	from script/rails:6:in `<main>'

Did you find a solution to this error? I'm experiencing the same while moving 3.1 to 3.2.

Yeah I had a file called quiet_assets.rb that I added awhile ago to take care of some log output issues when running webrick. Removing the file fixed it.

Ah, good to hear, thanks. I ended up with the same solution, but found this fix in the process: http://stackoverflow.com/questions/6312448/how-to-disable-logging-of-asset-pipeline-sprockets-messages-in-rails-3-1/7508407#7508407.

Maybe it will help future generations.

Thanks.