wrong argument type String (expected Array)

Question

I'm trying to use Octopress (a blogging engine on top of Jekyll) on my new Macbook, and I get this error when I run bundle exec jekyll --server:

(shortened path)

/path/to/markdown.rb:118:in `to_html': wrong argument type String (expected Array) (TypeError)
from /path/to/markdown.rb:118:in `convert'
...

(full path)

/usr/local/rvm/gems/ruby-1.9.2-p290/gems/jekyll-0.11.0/lib/jekyll/converters/markdown.rb:118:in `to_html': wrong argument type String (expected Array) (TypeError)
from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/jekyll-0.11.0/lib/jekyll/converters/markdown.rb:118:in `convert'
...

Looking at line 118, I see:

RDiscount.new(content, *@rdiscount_extensions).to_html

If I replace this line with a string like "hello", the server starts fine. But if I replace it with something like RDiscount.new("hello").to_html, I get the same error. However, launching irb and running RDiscount.new("hello").to_html works fine.

Any ideas what's wrong? I'm able to launch the server on another computer I have, but I'm not sure how to figure out what's the difference between what the two computers are doing (a different version of some library somewhere?).

Answer 1

Just a thought, but have you tried updating your gemset? The most recent version of jekyll is 0.11.2 and it uses maruku by default instead of RDiscount.

https://github.com/mojombo/jekyll/wiki/Install

Answer 2

First thing i'd do is check all the versions. ruby -v , gem -v, gem list -d sinatra , gem list -d octopress. etc and look for differences.