uninitialized constant Psych::Syck with Rails 3/Rubygems 1.6.2/bundler 1.0.10

Question

I'm trying to setup my ruby on rails dev environment on my macbook pro but running into this error:

/usr/local/Cellar/ruby/1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:289:in load': uninitialized constant Psych::Syck (NameError) from /usr/local/Cellar/ruby/1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:289:in_load'

I tried using another yaml engine by specifying syck in config/boot.rb but that didn't work.

require 'yaml' YAML::ENGINE.yamler= 'syck'

I'm using Rails 3/Ruby 1.9.2-p180/Bundler 1.0.10/RubyGems 1.6.2. I installed ruby 1.9.2 via brew.

score 4 · Answer 1 · answered Oct 10 '11 at 13:27

4

Update rubygems worked for me.

gem update --system

answered Oct 10 '11 at 13:27

toonsend

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Dinatih · Answer 2 · 2011-05-01T00:31:23.710

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If you have this :

gem "rspec-rails", ">= 2.0.0.beta.20"

remove ', ">= 2.0.0.beta.20"'

gem "rspec-rails"

It works for me

edited May 01 '11 at 00:31

answered Apr 30 '11 at 23:35

Dinatih

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Same for me. Removing the gem version for mongoid fixed it. – jtesch Aug 01 '11 at 19:38
I am very new to ruby. From where i can change this settings? – Pratik Soni Nov 20 '15 at 06:08
In your `rails_app_name/Gemfile`. – Dinatih Nov 20 '15 at 14:32

score 0 · Answer 3 · edited May 23 '17 at 10:27

0

GemCutter rake build now throws "undefined method 'write' for #<Syck::Emitter:...." after updating to rubygems 1.5.0 on ruby 1.9.2 on Windows maybe related?

edited May 23 '17 at 10:27

Community

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answered Mar 18 '11 at 17:40

rogerdpack

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uninitialized constant Psych::Syck with Rails 3/Rubygems 1.6.2/bundler 1.0.10

3 Answers3