Segmentation Fault

[Saurabh Bhatia]

Hi Guys,

I was reading through the book Nobody Knows Shoes and was trying the program
for a toy:

Shoes.app do
   @ball = oval :top => 10, left => 10, :radius => 10

   stack :margin => 40 do
       title "Cool"
       subtitle"Coller"
   end

   motion do |x, y|
    @ball.move width - x,height - y
  end
end

This gave me the following error:

shoes-toy.rb:2: [BUG] Segmentation fault
ruby 1.8.7 (2008-08-11 patchlevel 72) [i686-linux]

Aborted

I am using Ubuntu Intripid.
On Googling about the problem I learnt that this is a problem with the OS,
or memory allocation.
I am thinking that this is a memory allocation problem.
What are your views on this and What can possibly the solution to the
problem.?

Thanks

Saurabh