Aaron Kalin martinisoft

The quick fix

Assuming you have homebrew installed and you use bundler, you can fix this issue by doing the following:

gem uninstall nokogiri libxml-ruby
brew update
brew uninstall libxml2
brew uninstall libxslt
brew install libxml2 --with-xml2-config

Homebrew has blacklisted libiconv so the majority of your help via google will not work now.
Here's a way I figured out how to get nokogiri to compile if you made the mistake of upgrading your XCode version

Install packages via homebrew

brew update
brew install libxml2
brew install libxslt

	provide "ipaddress"
	require_plugin "#{os}::network"
	require_plugin "#{os}::virtualization"

	if virtualization["system"] == "openvz"
	network["interfaces"]["venet0:0"]["addresses"].each do \|ip, params\|
	if params["family"] == "inet"
	ipaddress ip
	end
	end

	if [ -f "${rvm_path}/scripts/rvm" ]; then

	source "${rvm_path}/scripts/rvm"

	if [ -f ".rvmrc" ]; then
	source ".rvmrc"
	elif [ -f ".ruby-version" ] && [ -f ".ruby-gemset" ]; then
	rvm use `cat .ruby-version`@`cat .ruby-gemset`
	elif [ -f ".ruby-version" ]; then
	rvm use `cat .ruby-version`

	/**
	Sample Propane caveatPatchor.js file based on tmm1's avatar hack.

	You'll need at least version 1.1.1 to experiment with this:
	http://propaneapp.com/appcast/Propane.1.1.1.zip

	Once I'm sure exposing this hack-injection point doesn't cause problems
	I'll do an official auto-updating version.

	As of version 1.1.1, Propane will load and execute the contents of

	#!/usr/bin/env bash

	function is_process_alive {
	set +e
	if [ -n $1 ] && kill -0 $1 >/dev/null 2>&1; then
	echo "yes"
	fi
	set -e
	}

	$ rake
	Parser.java:184:in `<init>': java.lang.NullPointerException: uri
	from Parser.java:69:in `pushMachine'
	from Parser.java:56:in `parse'
	from NativeMethodAccessorImpl.java:-2:in `invoke0'
	from NativeMethodAccessorImpl.java:39:in `invoke'
	from DelegatingMethodAccessorImpl.java:25:in `invoke'
	from Method.java:597:in `invoke'
	from JavaMethod.java:485:in `invokeDirectWithExceptionHandling'
	from JavaMethod.java:340:in `invokeDirect'

	$ rake clean spec cucumber --trace
	** Invoke clean (first_time)
	** Execute clean
	rm -r pkg
	rm -r tmp
	rm -r ext
	rm -r java/target
	rm -r doc
	rm -r /Users/martinisoft/projects/gherkin/tasks/../ragel/i18n/ar.java.rl
	rm -r /Users/martinisoft/projects/gherkin/tasks/../ragel/i18n/lexer_common.ar.rl

	[
	[
	"interfaces",
	{
	"lo": {
	"mtu": "16436",
	"flags": [
	"LOOPBACK",
	"UP",
	"LOWER_UP"

	# Play music. At your office. Like a boss.
	#
	# NOTE:
	# This uses the new version of play (the next branch currently)
	# https://github.com/holman/play/tree/next
	#
	# Make sure you set up your HUBOT_PLAY_URL environment variable with the URL to
	# your company's play.
	#
	# Controls