我在jruby-1.6.6上设置spec，autotest和spork，但是我得到了以下异常。我没有在谷歌附近找到太多，需要帮助
$ jruby -S autotest
(Not running features. To run features in autotest, set AUTOFEATURE=true.)
loading autotest/rspec2
TypeError: can't convert Array into String
join at org/jruby/RubyArray.java:1868
initialize at /Users/larry/.rvm/rubies/jruby-1.6.6/lib/ruby/site_ruby/shared/ffi/ffi.rb:64
attach_function at /Users/larry/.rvm/rubies/jruby-1.6.6/lib/ruby/site_ruby/shared/ffi/library.rb:154
each at org/jruby/RubyArray.java:1614
attach_function at /Users/larry/.rvm/rubies/jruby-1.6.6/lib/ruby/site_ruby/shared/ffi/library.rb:150
Uname at /Users/larry/.rvm/gems/jruby-1.6.6@entercamp/gems/sys-uname-0.9.0/lib/unix/sys/uname.rb:43
Sys at /Users/larry/.rvm/gems/jruby-1.6.6@entercamp/gems/sys-uname-0.9.0/lib/unix/sys/uname.rb:8
(root) at /Users/larry/.rvm/gems/jruby-1.6.6@entercamp/gems/sys-uname-0.9.0/lib/unix/sys/uname.rb:6
require at org/jruby/RubyKernel.java:1036
require at /Users/larry/.rvm/gems/jruby-1.6.6@entercamp/gems/sys-uname-0.9.0/lib/unix/sys/uname.rb:36
(root) at /Users/larry/.rvm/gems/jruby-1.6.6@entercamp/gems/autotest-fsevent-0.2.8/lib/autotest/fsevent.rb:3
require at org/jruby/RubyKernel.java:1036
require at /Users/larry/.rvm/gems/jruby-1.6.6@entercamp/gems/autotest-fsevent-0.2.8/lib/autotest/fsevent.rb:59
(root) at /Users/larry/.autotest:1
load at org/jruby/RubyKernel.java:1062
initialize at /Users/larry/.autotest:315
each at org/jruby/RubyArray.java:1614
initialize at /Users/larry/.rvm/gems/jruby-1.6.6@entercamp/gems/ZenTest-4.6.2/lib/autotest.rb:314
initialize at /Users/larry/.rvm/gems/jruby-1.6.6@entercamp/gems/rspec-core-2.8.0/lib/autotest/rspec2.rb:13
run at /Users/larry/.rvm/gems/jruby-1.6.6@entercamp/gems/ZenTest-4.6.2/lib/autotest.rb:244
(root) at /Users/larry/.rvm/gems/jruby-1.6.6@entercamp/gems/ZenTest-4.6.2/bin/autotest:6
load at org/jruby/RubyKernel.java:1062
(root) at /Users/larry/.rvm/gems/jruby-1.6.6@entercamp/bin/autotest:19
我的宝石文件： 来源'https://rubygems.org'
gem 'rails', '3.2.1'
# gem 'jruby-openssl'
gem 'json'
gem 'jquery-rails'
gem 'twitter-text'
gem "mongoid", "~> 2.4"
gem "bson_ext", "~> 1.5"
gem "mongoid-paperclip", :require => "mongoid_paperclip"
gem 'i18n-js'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'sass-rails', '~> 3.2.3'
gem 'coffee-rails', '~> 3.2.1'
gem 'bootstrap-sass', '~> 2.0.1'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
gem "therubyrhino", "~> 1.73.1"
gem 'uglifier', '>= 1.0.3'
end
group :development, :test do
gem 'factory_girl_rails', '1.6.0' # use factories instead of fixtures
gem 'faker', '1.0.1' # easily create fake data for tests
gem 'rspec-rails', '2.8.1' # test framework
gem 'cucumber-rails', '1.2.1' # integration test framework
gem 'simplecov', '0.5.4' # test coverage report
gem 'json_spec', '0.8.0' # easier testing of JSON
gem 'database_cleaner', '0.7.1' # manage DB between tests
gem 'mongoid-rspec', '1.4.4' # rspec matchers for mongoid
gem 'autotest'
gem 'autotest-fsevent'
gem 'spork', '~> 0.9.0.rc'
end
jvm版本：
$ java -version
java version "1.6.0_29"
Java(TM) SE Runtime Environment (build 1.6.0_29-b11-402-11M3527)
Java HotSpot(TM) 64-Bit Server VM (build 20.4-b02-402, mixed mode)