Awestruct error

gistfile1.txt

paul@fury:~/workspace/arquillian.github.com$ awestruct -d --force
can't convert nil into String
/home/paul/workspace/arquillian.github.com/_ext/arquillian.rb:411:in `join'
/home/paul/workspace/arquillian.github.com/_ext/arquillian.rb:411:in `handles'
/home/paul/workspace/arquillian.github.com/_ext/repository.rb:141:in `execute'
/home/paul/workspace/arquillian.github.com/_ext/repository.rb:140:in `each_value'
/home/paul/workspace/arquillian.github.com/_ext/repository.rb:140:in `execute'
/home/paul/workspace/arquillian.github.com/_ext/repository.rb:132:in `each'
/home/paul/workspace/arquillian.github.com/_ext/repository.rb:132:in `execute'
/var/lib/gems/1.8/gems/awestruct-0.2.15/lib/awestruct/extensions/pipeline.rb:33:in `execute'
/var/lib/gems/1.8/gems/awestruct-0.2.15/lib/awestruct/extensions/pipeline.rb:32:in `each'
/var/lib/gems/1.8/gems/awestruct-0.2.15/lib/awestruct/extensions/pipeline.rb:32:in `execute'
/var/lib/gems/1.8/gems/awestruct-0.2.15/lib/awestruct/engine.rb:491:in `load_extensions'
/var/lib/gems/1.8/gems/awestruct-0.2.15/lib/awestruct/engine.rb:86:in `generate'
/var/lib/gems/1.8/gems/awestruct-0.2.15/lib/awestruct/commands/generate.rb:18:in `run'
/var/lib/gems/1.8/gems/awestruct-0.2.15/bin/awestruct:170
/usr/local/bin/awestruct:19:in `load'
/usr/local/bin/awestruct:19
Serving site at /home/paul/workspace/arquillian.github.com/_site
[2012-04-09 21:34:48] INFO  WEBrick 1.3.1
[2012-04-09 21:34:48] INFO  ruby 1.8.7 (2011-06-30) [x86_64-linux]
[2012-04-09 21:34:54] INFO  WEBrick::HTTPServer#start: pid=19104 port=4242