Running rake generate, I get a path error (have added gem: -jekyll-sitemap to _config file and also Gemfile)
$ rake generate
## Generating Site with Jekyll
identical source/stylesheets/screen.css
Configuration file: /Users/xxxx/octopress/_config.yml
Source: source
Destination: public
Generating...
Error reading file /Users/xxxx/.rvm/gems/ruby-1.9.3-p392/gems/jekyll-sitemap-0.6.1/lib/sitemap.xml: No such file or directory - /Users/xxxx/octopress/source/Users/xxxx/.rvm/gems/ruby-1.9.3-p392/gems/jekyll-sitemap-0.6.1/lib/sitemap.xml
done.
Any idea what causes this? Only sitemap generation breaks.