jrubyfx-jarify command fails on windows about jrubyfx HOT 3 CLOSED

C:\Users\edub\projects\Hello\Hello>jrubyfx-jarify src --main src\HelloWorldApp.r
b HelloWorldApp.jar
mkdir -p C:/Users/edub/AppData/Local/Temp/jrubyfx20130123-5564-i1a1yu
cp C:\Users\edub/.jruby-jar/jruby-complete.jar C:/Users/edub/AppData/Local/Temp/
jrubyfx20130123-5564-i1a1yu/HelloWorldApp.jar
cp src/Hello.fxml C:/Users/edub/AppData/Local/Temp/jrubyfx20130123-5564-i1a1yu/H
ello.fxml
cp src/HelloWorldApp.rb C:/Users/edub/AppData/Local/Temp/jrubyfx20130123-5564-i1
a1yu/HelloWorldApp.rb
cp src\HelloWorldApp.rb C:/Users/edub/AppData/Local/Temp/jrubyfx20130123-5564-i1
a1yu/jar-bootstrap.rb
cp -r c:/jruby-1.7.2/lib/ruby/gems/shared/gems/jrubyfx-0.9-java/lib/jrubyfx C:/U
sers/edub/AppData/Local/Temp/jrubyfx20130123-5564-i1a1yu
cp -r c:/jruby-1.7.2/lib/ruby/gems/shared/gems/jrubyfx-0.9-java/lib/jrubyfx.rb C
:/Users/edub/AppData/Local/Temp/jrubyfx20130123-5564-i1a1yu
cp -r c:/jruby-1.7.2/lib/ruby/gems/shared/gems/jrubyfx-0.9-java/lib/jrubyfx_task
s.rb C:/Users/edub/AppData/Local/Temp/jrubyfx20130123-5564-i1a1yu
cd C:/Users/edub/AppData/Local/Temp/jrubyfx20130123-5564-i1a1yu
jar ufe 'HelloWorldApp.jar' org.jruby.JarBootstrapMain *
RuntimeError: Command failed with status (127): [jar ufe 'HelloWorldApp.jar' org
.jruby.JarB...]
  create_shell_runner at c:/jruby-1.7.2/lib/ruby/1.9/rake/file_utils.rb:53
                 call at org/jruby/RubyProc.java:249r
                   sh at c:/jruby-1.7.2/lib/ruby/1.9/rake/file_utils.rb:45
                   sh at c:/jruby-1.7.2/lib/ruby/1.9/rake/file_utils_ext.rb:43
       jarify_jrubyfx at c:/jruby-1.7.2/lib/ruby/gems/shared/gems/jrubyfx-0.9-ja
va/lib/jrubyfx_tasks.rb:89
               (root) at c:/jruby-1.7.2/lib/ruby/gems/shared/gems/jrubyfx-0.9-ja
va/bin/jrubyfx-jarify:90
                 load at org/jruby/RubyKernel.java:1046
               (root) at c:\jruby-1.7.2\bin\jrubyfx-jarify:23