I have just installed ruby 1.9.1p378 (2010-01-10 revision 26273) [i386-mingw32]
on Windows XP SP3

created a new rails application:

rails niltest cd niltest ruby script\generate controller niltest edit app\controllers\niltest_controller.rb class NiltestController < ApplicationController

def index

@bla = ""

end

end

edit app\views\niltest\index.html.erb

BlaBla test

edit config\environment.rb # remove Active Record and Action Mailer Framework config.frameworks -= [ :active_record, :action_mailer ]

ruby -d script\server .. .. [2010-02-22 18:39:39] INFO WEBrick 1.3.1 [2010-02-22 18:39:39] INFO ruby 1.9.1 (2010-01-10) [i386-mingw32] [2010-02-22 18:39:39] INFO WEBrick::HTTPServer#start: pid=1872 port=3000 C:/Rails/niltest/app/views/niltest/index.html.erb:2: warning: instance variable
@blabla not initialized Exception NoMethodError' at C:/Ruby19/lib/ruby/gems/1.9.1/gems/activesupport-2.<br/> 3.5/lib/active_support/whiny_nil.rb:52 - private methodtest' called for nil:Ni
lClass
Exception NilClass' at C:/Ruby19/lib/ruby/gems/1.9.1/gems/actionpack-2.3.5/lib/<br/> action_view/template.rb:213 -<br/> ActionView::TemplateError (private methodtest' called for nil:NilClass) on lin
e #2 of app/views/niltest/index.html.erb:
1:

BlaBla test

2: <%= @blabla.test %>

app/views/niltest/index.html.erb:2
<internal:prelude>:8:in `synchronize'
C:/Ruby19/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
C:/Ruby19/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
C:/Ruby19

And ruby crashes with :

AppName: ruby.exe AppVer: 1.9.1.0 ModName: msvcrt-ruby191.dll
ModVer: 1.9.1.0 Offset: 000e9b36

When using Ruby without the debug flag everything works fine:

ruby script\server