"undefined method `add_method_signature'" error with creating jar about jrubyfx HOT 4 CLOSED

❯ jruby -S gem list

*** LOCAL GEMS ***

builder (3.2.2)
hoe (3.7.0)
jrubyfx (1.1.0 java)
jrubyfx-fxmlloader (0.3 java)
rake (10.1.0, 10.0.3)
rawr (1.6.6)
rubyzip (0.9.9)
s4t-utils (1.0.4)
user-choices (1.1.6.1)
xml-simple (1.1.2)

❯ jruby -S jrubyfx-jarify samples/fxml/ --main samples/fxml/Demo.rb Demo.jar
mkdir -p /Users/momonga/.jruby-jar
cd /Users/momonga/.jruby-jar
JRuby complete jar not found. Downloading... (May take awhile)
cd /Users/momonga/Dropbox/Develops/jrubyfx
mkdir -p /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c
cp /Users/momonga/.jruby-jar/jruby-complete-1.7.4.jar /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c/Demo.jar
cp -r samples/fxml//complex_control.rb /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c/complex_control.rb
cp -r samples/fxml//ComplexControl.fxml /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c/ComplexControl.fxml
cp -r samples/fxml//Demo.fxml /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c/Demo.fxml
cp -r samples/fxml//Demo.rb /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c/Demo.rb
cp samples/fxml/Demo.rb /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c/jar-bootstrap.rb
cp -r /usr/local/Cellar/jruby/1.7.4/libexec/lib/ruby/gems/shared/gems/jrubyfx-1.1.0-java/lib/jrubyfx /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c
cp -r /usr/local/Cellar/jruby/1.7.4/libexec/lib/ruby/gems/shared/gems/jrubyfx-1.1.0-java/lib/jrubyfx.rb /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c
cp -r /usr/local/Cellar/jruby/1.7.4/libexec/lib/ruby/gems/shared/gems/jrubyfx-1.1.0-java/lib/jrubyfx_tasks.rb /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c
cp -r /usr/local/Cellar/jruby/1.7.4/libexec/lib/ruby/gems/shared/gems/jrubyfx-fxmlloader-0.3-java/lib/fxmlloader /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c
cp -r /usr/local/Cellar/jruby/1.7.4/libexec/lib/ruby/gems/shared/gems/jrubyfx-fxmlloader-0.3-java/lib/FXMLLoader-j8.jar /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c
cp -r /usr/local/Cellar/jruby/1.7.4/libexec/lib/ruby/gems/shared/gems/jrubyfx-fxmlloader-0.3-java/lib/jrubyfx-fxmlloader.rb /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c
cd /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c
jar ufe 'Demo.jar' org.jruby.JarBootstrapMain *
chmod 775 Demo.jar
cd /Users/momonga/Dropbox/Develops/jrubyfx
mv /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c/Demo.jar Demo.jar
rm -rf /var/folders/jf/9wcyvc712dgbrnx19dxlrfy80000gn/T/jrubyfx20130819-75758-13sv53c

❯ java -jar ./Demo.jar 
Exception running Application:
#<TypeError: can't convert nil into String>
org/jruby/RubyFile.java:1840:in `join'
org/jruby/RubyFile.java:801:in `join'
file:/Users/momonga/Dropbox/Develops/jrubyfx/Demo.jar!/jrubyfx/controller.rb:339:in `get_fxml_loader'
file:/Users/momonga/Dropbox/Develops/jrubyfx/Demo.jar!/jrubyfx/controller.rb:117:in `load_into'
classpath:jar-bootstrap.rb:42:in `start'
file:/Users/momonga/Dropbox/Develops/jrubyfx/Demo.jar!/jrubyfx/java_fx_impl.rb:124:in `launch_app_after_platform'
org/jruby/gen/InterfaceImpl1713636191.gen:13:in `run'
Java has been detached already, but someone is still trying to use it at -[GlassApplication GlassApplicationDidChangeScreenParameters]:src/com/sun/mat/ui/GlassApplication.m:138
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x0000000167f72b93, pid=75924, tid=3847
#
# JRE version: 7.0_25-b15
# Java VM: Java HotSpot(TM) 64-Bit Server VM (23.25-b01 mixed mode bsd-amd64 compressed oops)
# Problematic frame:
# C  [libglass.dylib+0x13b93]  GlassScreenDidChangeScreenParameters+0x13
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /Users/momonga/Dropbox/Develops/jrubyfx/hs_err_pid75924.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.sun.com/bugreport/crash.jsp
#
zsh: abort      java -Dfile.encoding=UTF-8 -jar ./Demo.jar