zenweb 3.0.0b1 error on example-site

rake.log

** Invoke default (first_time)
** Invoke generate (first_time)
** Execute generate
unknown file type: config.ru
unknown file type: Gemfile
unknown file type: Gemfile.lock
unknown file type: rake.log
** Invoke extra_wirings (first_time)
** Execute extra_wirings
** Invoke site (first_time)
** Invoke .site (first_time, not_needed)
** Invoke .site/atom.xml (first_time, not_needed)
** Invoke .site (not_needed)
** Invoke atom.xml.erb (first_time, not_needed)
** Invoke _config.yml (first_time, not_needed)
** Invoke .site/about/index.html (first_time, not_needed)
** Invoke .site/about (first_time, not_needed)
** Invoke about/index.html.md (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke _layouts/site.erb (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke .site/index.html (first_time, not_needed)
** Invoke about/index.html.md (not_needed)
** Invoke blog/index.html.erb (first_time, not_needed)
** Invoke blog/_config.yml (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke _layouts/site.erb (not_needed)
** Invoke blog/2012-01-04-page3.html.md (first_time, not_needed)
** Invoke blog/_config.yml (not_needed)
** Invoke _layouts/post.erb (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke _layouts/site.erb (not_needed)
** Invoke blog/2012-01-03-page2.html.md (first_time, not_needed)
** Invoke blog/_config.yml (not_needed)
** Invoke _layouts/post.erb (not_needed)
** Invoke blog/2012-01-02-page1.html.md (first_time, not_needed)
** Invoke blog/_config.yml (not_needed)
** Invoke _layouts/post.erb (not_needed)
** Invoke pages/index.html.erb (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke _layouts/site.erb (not_needed)
** Invoke pages/nonblogpage.html.md (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke _layouts/site.erb (not_needed)
** Invoke projects/index.html.erb (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke _layouts/site.erb (not_needed)
** Invoke projects/zenweb.html.erb (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke _layouts/project.erb (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke _layouts/site.erb (not_needed)
** Invoke .site (not_needed)
** Invoke index.html.erb (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke _layouts/site.erb (not_needed)
** Invoke .site/about/index.html (not_needed)
** Invoke .site/blog/2012/01/02/page1.html (first_time, not_needed)
** Invoke .site/blog/2012/01/02 (first_time, not_needed)
** Invoke blog/2012-01-02-page1.html.md (not_needed)
** Invoke .site/blog/2012/01/03/page2.html (first_time, not_needed)
** Invoke .site/blog/2012/01/03 (first_time, not_needed)
** Invoke blog/2012-01-03-page2.html.md (not_needed)
** Invoke .site/blog/2012/01/04/page3.html (first_time, not_needed)
** Invoke .site/blog/2012/01/04 (first_time, not_needed)
** Invoke blog/2012-01-04-page3.html.md (not_needed)
** Invoke .site/blog/index.html (first_time, not_needed)
** Invoke blog/2012-01-04-page3.html.md (not_needed)
** Invoke blog/2012-01-03-page2.html.md (not_needed)
** Invoke blog/2012-01-02-page1.html.md (not_needed)
** Invoke .site/blog (first_time, not_needed)
** Invoke blog/index.html.erb (not_needed)
** Invoke .site/blog/2012/01/04/page3.html (not_needed)
** Invoke .site/blog/2012/01/03/page2.html (not_needed)
** Invoke .site/blog/2012/01/02/page1.html (not_needed)
** Invoke .site/pages/index.html (first_time, not_needed)
** Invoke pages/nonblogpage.html.md (not_needed)
** Invoke .site/pages (first_time, not_needed)
** Invoke pages/index.html.erb (not_needed)
** Invoke .site/pages/nonblogpage.html (first_time, not_needed)
** Invoke .site/pages (not_needed)
** Invoke pages/nonblogpage.html.md (not_needed)
** Invoke .site/pages/nonblogpage.html (not_needed)
** Invoke .site/projects/index.html (first_time, not_needed)
** Invoke projects/zenweb.html.erb (not_needed)
** Invoke .site/projects (first_time, not_needed)
** Invoke projects/index.html.erb (not_needed)
** Invoke .site/projects/zenweb.html (first_time, not_needed)
** Invoke .site/projects (not_needed)
** Invoke projects/zenweb.html.erb (not_needed)
** Invoke .site/projects/zenweb.html (not_needed)
** Invoke .site/blog/index.html (not_needed)
** Invoke .site/projects/index.html (not_needed)
** Invoke .site/projects/zenweb.html (not_needed)
** Invoke .site/blog/2012/01/04/page3.html (not_needed)
** Invoke .site/blog/2012/01/03/page2.html (not_needed)
** Invoke .site/pages/index.html (not_needed)
** Invoke .site/blog/2012/01/02/page1.html (not_needed)
** Invoke .site/pages/nonblogpage.html (not_needed)
** Invoke .site/index.html (not_needed)
** Invoke .site/sitemap.xml (first_time, not_needed)
** Invoke .site (not_needed)
** Invoke sitemap.xml.erb (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke .site/index.html (not_needed)
** Invoke .site/about/index.html (not_needed)
** Invoke .site/blog/2012/01/02/page1.html (not_needed)
** Invoke .site/blog/2012/01/03/page2.html (not_needed)
** Invoke .site/blog/2012/01/04/page3.html (not_needed)
** Invoke .site/blog/index.html (not_needed)
** Invoke .site/pages/index.html (not_needed)
** Invoke .site/pages/nonblogpage.html (not_needed)
** Invoke .site/projects/index.html (not_needed)
** Invoke .site/projects/zenweb.html (not_needed)
** Invoke .site/about/index.html (not_needed)
** Invoke .site/blog/2012/01/02/page1.html (not_needed)
** Invoke .site/blog/2012/01/03/page2.html (not_needed)
** Invoke .site/blog/2012/01/04/page3.html (not_needed)
** Invoke .site/blog/index.html (not_needed)
** Invoke .site/css/colors.css (first_time, not_needed)
** Invoke .site/css (first_time, not_needed)
** Invoke css/colors.css.less (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke .site/css/styles.css (first_time, not_needed)
** Invoke .site/css (not_needed)
** Invoke css/styles.css (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke .site/css/syntax.css (first_time, not_needed)
** Invoke .site/css (not_needed)
** Invoke css/syntax.css (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Invoke .site/img/bg.png (first_time)
** Invoke .site/img (first_time, not_needed)
** Invoke img/bg.png (first_time, not_needed)
** Invoke _config.yml (not_needed)
** Execute .site/img/bg.png
Rendering .site/img/bg.png
rake aborted!
invalid byte sequence in UTF-8
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/zenweb-3.0.0b1/lib/zenweb/page.rb:70:in `strip'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/zenweb-3.0.0b1/lib/zenweb/page.rb:70:in `body'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/zenweb-3.0.0b1/lib/zenweb/page.rb:308:in `subrender'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/zenweb-3.0.0b1/lib/zenweb/page.rb:291:in `render'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/zenweb-3.0.0b1/lib/zenweb/page.rb:218:in `generate'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/zenweb-3.0.0b1/lib/zenweb/page.rb:377:in `block in wire'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:176:in `block in invoke_prerequisites'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:174:in `each'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:174:in `invoke_prerequisites'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:157:in `block in invoke_with_call_chain'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/zenweb-3.0.0b1/lib/zenweb/site.rb:92:in `generate'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/zenweb-3.0.0b1/lib/zenweb/tasks.rake:20:in `block in <top (required)>'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:176:in `block in invoke_prerequisites'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:174:in `each'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:174:in `invoke_prerequisites'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:157:in `block in invoke_with_call_chain'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/Users/whitley/.rbenv/versions/1.9.3-p125/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/Users/whitley/.rbenv/versions/1.9.3-p125/bin/rake:19:in `load'
/Users/whitley/.rbenv/versions/1.9.3-p125/bin/rake:19:in `<main>'
Tasks: TOP => site => .site/img/bg.png