Unrequireable and Rubygems - problem

Dear all,

in conjunction with my classifier/tagging problems, I was trying to use
“unrequireable” from
_http://simplypowerful.1984.cz/unrequireable/1.2005.09.13/doc/_
(http://simplypowerful.1984.cz/unrequireable/1.2005.09.13/doc/) .

The example given at that website works, but

if I write

require “unrequireable”
Object::unrequireable!

require “summarize_text.rb”
“china.txt”.text_summ(30,‘test5.rtf’)
unrequire “summarize_text.rb”
require “transl.rb”
“test5.rtf”.tag_it(‘english’,‘test6.txt’),

where “summarize_text.rb” starts with the lines,

require “rubygems”
require ‘classifier’,

I get the error: no such file to load - classifier -

It is in
C:\cygwin\usr\local\lib\ruby\gems\1.8\gems\classifier-1.3.0\lib,
and it is found, if I just execute “summarize_text.rb”.

Why is that ?

Thank you,

Best regards,

Axel