Gollum Wiki - undefined method `new' for Redcarpet:Module - github

Question

I'm trying to use Gollumn Wiki, so I could edit my GitHub Wiki but I can't seem to get it to work.
I'm on Ubuntu 11.10, 64Bit.
I've tried this as well with Ruby 1.9, also the same error.
I cloned my GitHub Wiki git repository for my project, fired up Gollum, and this is the error I recieved:
NoMethodError at /
undefined method `new' for Redcarpet:Module
The full stack trace is:
:public is no longer used to avoid overloading Module#public, use :public_folder instead
from /var/lib/gems/1.8/gems/gollum-1.3.1/bin/../lib/gollum/frontend/app.rb:17
[2011-12-06 15:20:15] INFO WEBrick 1.3.1
[2011-12-06 15:20:15] INFO ruby 1.8.7 (2011-06-30) [x86_64-linux]
== Sinatra/1.3.1 has taken the stage on 4567 for development with backup from WEBrick
[2011-12-06 15:20:20] INFO WEBrick::HTTPServer#start: pid=22017 port=4567
NoMethodError - undefined method `new' for Redcarpet:Module:
/var/lib/gems/1.8/gems/gollum-1.3.1/lib/gollum/markup.rb:463:in `render'
/var/lib/gems/1.8/gems/gollum-1.3.1/lib/gollum/page.rb:171:in `formatted_data'
/var/lib/gems/1.8/gems/gollum-1.3.1/bin/../lib/gollum/frontend/app.rb:190:in `show_page_or_file'
/var/lib/gems/1.8/gems/gollum-1.3.1/bin/../lib/gollum/frontend/app.rb:42:in `GET /'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:1211:in `call'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:1211:in `compile!'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:772:in `[]'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:772:in `route!'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:788:in `route_eval'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:772:in `route!'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:821:in `process_route'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:819:in `catch'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:819:in `process_route'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:771:in `route!'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:770:in `each'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:770:in `route!'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:886:in `dispatch!'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:706:in `call!'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:871:in `invoke'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:871:in `catch'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:871:in `invoke'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:706:in `call!'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:692:in `call'
/var/lib/gems/1.8/gems/rack-protection-1.1.4/lib/rack/protection/xss_header.rb:22:in `call'
/var/lib/gems/1.8/gems/rack-protection-1.1.4/lib/rack/protection/path_traversal.rb:16:in `call'
/var/lib/gems/1.8/gems/rack-protection-1.1.4/lib/rack/protection/json_csrf.rb:17:in `call'
/var/lib/gems/1.8/gems/rack-protection-1.1.4/lib/rack/protection/base.rb:47:in `call'
/var/lib/gems/1.8/gems/rack-protection-1.1.4/lib/rack/protection/xss_header.rb:22:in `call'
/var/lib/gems/1.8/gems/rack-1.3.5/lib/rack/nulllogger.rb:9:in `call'
/var/lib/gems/1.8/gems/rack-1.3.5/lib/rack/head.rb:9:in `call'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/showexceptions.rb:21:in `call'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:1334:in `call'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:1403:in `synchronize'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:1334:in `call'
/var/lib/gems/1.8/gems/rack-1.3.5/lib/rack/handler/webrick.rb:59:in `service'
/usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
/usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
/usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
/usr/lib/ruby/1.8/webrick/server.rb:162:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
/usr/lib/ruby/1.8/webrick/server.rb:95:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:92:in `each'
/usr/lib/ruby/1.8/webrick/server.rb:92:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:23:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:82:in `start'
/var/lib/gems/1.8/gems/rack-1.3.5/lib/rack/handler/webrick.rb:13:in `run'
/var/lib/gems/1.8/gems/sinatra-1.3.1/lib/sinatra/base.rb:1295:in `run!'
/var/lib/gems/1.8/gems/gollum-1.3.1/bin/gollum:125
/usr/local/bin/gollum:19:in `load'
/usr/local/bin/gollum:19
Any help would be appreciated.

Answer 1

Try reinstalling redcarpet like this:
gem uninstall redcarpet
gem install redcarpet --version=1.17.2
If using bundler, put in your Gemfile
gem 'redcarpet', '1.17.2'
gem 'gollum'

Answer 2

I am trying to use Gollum as my documentation for new projects and this problem hit me recently also. To solve this I isolated the changes using Bundler. In my cloned Gollum directory on my local machine I did the following:
# Create a Gemfile with the following:
source "http://rubygems.org"
gem 'redcarpet', '1.17.2'
gem 'gollum'
Next just run bundle install to set everything up. When you are ready to start the gollum server run bundle exec gollum from the command line.
This will give you a nice isolated gollum server using the gems you specifically bundled and will solve this problem discussed in your question.

Answer 3

I got the same "undefined method 'new' for Redcarpet:Module" error after running a bundle update.
Similar to above, this installed version 2 of the gem along side version 1. I could have gone back to v1 as described above, but since I"m not actually using a system that required the first gen of the gem, I removed version 1 and went with v2. Easy.