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PORails server won't start because of new relic error
 

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  1. PORails server won't start because of new relic error
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    <p>When I try to start my Rails server, I am getting the following error:</p> <p>I am using ruby 1.9.2</p> <pre><code> =&gt; Booting WEBrick =&gt; Rails 3.1.8 application starting in development on http://0.0.0.0:3000 =&gt; Call with -d to detach =&gt; Ctrl-C to shutdown server /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/newrelic_rpm-3.4.2/lib/new_relic/agent/agent.rb:318:in `log_app_names': undefined method `join' for nil:NilClass (NoMethodError) from /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/newrelic_rpm-3.4.2/lib/new_relic/agent/agent.rb:439:in `start' from /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/newrelic_rpm-3.4.2/lib/new_relic/control/instance_methods.rb:95:in `start_agent' from /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/newrelic_rpm-3.4.2/lib/new_relic/control/instance_methods.rb:83:in `init_plugin' from /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/newrelic_rpm-3.4.2/lib/newrelic_rpm.rb:36:in `block in &lt;class:Railtie&gt;' from /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/railties-3.1.8/lib/rails/initializable.rb:30:in `instance_exec' from /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/railties-3.1.8/lib/rails/initializable.rb:30:in `run' from /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/railties-3.1.8/lib/rails/initializable.rb:55:in `block in run_initializers' from /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/railties-3.1.8/lib/rails/initializable.rb:54:in `each' from /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/railties-3.1.8/lib/rails/initializable.rb:54:in `run_initializers' from /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/railties-3.1.8/lib/rails/application.rb:96:in `initialize!' from /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/railties-3.1.8/lib/rails/railtie/configurable.rb:30:in `method_missing' from /Users/toptier/Desktop/Proyectos/CursoIngles/config/environment.rb:5:in `&lt;top (required)&gt;' from /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/activesupport-3.1.8/lib/active_support/dependencies.rb:240:in `require' from /Users/toptier/.rvm/gems/ruby-1.9.2-p320/gems/activesupport-3.1.8/lib/active_support/dependencies.rb:240:in `block in require' </code></pre> <p>It is using the following gem: newrelic_rpm (3.4.2). If I comment newrelic line in gemfile it works well,</p> <p>Any idea? </p>
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    1. COI have the same problem with new version of new relic gem `3.4.2`. Don't know what causes this, but with `3.4.1` everything works perfect. Try to downgrade gem version.
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