Ironruby core - Sep 2012 - No such file to load -- gem_prelude.rb (LoadError)

Hi,
I am new to IronRuby. I have installed IronRuby1.1. When I execute my
IronRuby script I get an error:

unknown: no such file to load -- gem_prelude.rb (LoadError)

Can someone tell me why this error is occuring???
I am trying to automate using Bewildr.
This is my script:

require ''rubygems''
require ''bewildr''
puts "hello"
@app = Bewildr::Application.start(''C:/Documents and
Settings/Desktop/ExpenseItStandalone.exe'')

Thanks in advance,
Sophia

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http://www.ruby-forum.com/attachment/7746/ironruby.JPG


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