problems installing blacksmith on OSX

I've been running blacksmith for some time for my blog without any problems. The blog is stored in this public repo: https://github.com/colmsjo/myblog

I get this error when I try to render the blog on my new mac:

Gizur-MacBook-095207fa:myblog jonas$ ./node_modules/blacksmith/bin/blacksmith blog
Rendering: blog
Error rendering: blog
[TypeError: Cannot read property 'compiled' of undefined]
[ 'TypeError: Cannot read property \'compiled\' of undefined',
  '    at compileMode (/Users/jonas/git/colmsjo/myblog/node_modules/blacksmith/node_modules/highlight.js/highlight.js:142:15)',
  '    at compileLanguage (/Users/jonas/git/colmsjo/myblog/node_modules/blacksmith/node_modules/highlight.js/highlight.js:213:5)',
  '    at highlight (/Users/jonas/git/colmsjo/myblog/node_modules/blacksmith/node_modules/highlight.js/highlight.js:362:5)',
  '    at Object.common.marked.highlight (/Users/jonas/git/colmsjo/myblog/node_modules/blacksmith/lib/blacksmith/common.js:41:14)',
  '    at Parser.tok (/Users/jonas/git/colmsjo/myblog/node_modules/blacksmith/node_modules/marked/lib/marked.js:846:33)',
  '    at Parser.parse (/Users/jonas/git/colmsjo/myblog/node_modules/blacksmith/node_modules/marked/lib/marked.js:787:17)',
  '    at Function.Parser.parse [as parser] (/Users/jonas/git/colmsjo/myblog/node_modules/blacksmith/node_modules/marked/lib/marked.js:774:17)',
  '    at renderMarkdown (/Users/jonas/git/colmsjo/myblog/node_modules/blacksmith/lib/blacksmith/content.js:146:23)',
  '    at fn (/Users/jonas/git/colmsjo/myblog/node_modules/blacksmith/node_modules/async/lib/async.js:517:34)',
  '    at /Users/jonas/git/colmsjo/myblog/node_modules/blacksmith/node_modules/async/lib/async.js:441:34',
  '    at process._tickCallback (node.js:325:13)' ]

npm install runs without any errors. I'm guessing there is some dependency problem. Any suggestions?