ok
I tried added active records as you said but i think that i am missing 
the original circle.rb file so i have only half of the script.
this is an old script that was written a few years ago. i will try to 
get a hold on it.
if i use the gem it doesnt work.

require 'active_record'
require 'ruby-debug'
require 'circle'

first_circle=Circle.new()
@number_of_rounds=1
primaries=Array.new
@prime_numbers=Hash.new
@prime_numbers[1]=0
#@prime_numbers

 and it goes on....

 i get this message

primes.rb:7:in `<main>': undefined method `new' for Circle:Module 
(NoMethodError)

so you are right it is a missing script.

thank you for your help.
Jonathan

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