Caused by: org.jruby.exceptions.RaiseException: (LoadError) no such file to load -- asciidoctor
at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:1027) [jruby-complete-1.7.3.jar:]
at RUBY.require(classpath:/META-INF/jruby.home/lib/ruby/shared/rubygems/custom_require.rb:36) at RUBY.(root)(<script>:2)
Dan has tried with AS7 and had found some integration problems, so if you are using openshift with AS 7 (for example you can use Tomcat too), may be you are founding the same problem as Dan, this will require some research.