I just downloaded and installed the win32utils installer. When I try to
run the sample script provide in changenotify.txt

 require "win32/changenotify"
include Win32

# Wait for any writes to files in the C:\ drive.
filter = ChangeNotify::LAST_WRITE
cn = ChangeNotify.new("C:\\",true,filter)
cn.wait{ |s|
puts "Something changed"
puts "File: " + s.file_name
puts "Action: " + s.action

}

I get the following error.

:/ruby/lib/ruby/site_ruby/1.8/i386-msvcrt/win32/ipc.so: invalid
attribute name `recursive?' (NameError)
	from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
	from cjsample.rb:1

What am I doing wrong?

thanks,

Luis