Problems with Rbehave

Hello,

as a beginner with Ruby would like to try out the rbehave code at
Introducing rbehave - Dan North & Associates Ltd. It seems rbehave
has some problems. (it was installed with ‘gem install rbehave’)
Ruby Version: 1.9.2
Rspec Version: 2.10.3
Rbehave Version: 0.3.0

On the site
(http://rubyforge.org/pipermail/rbehave-users/2007-July/000007.html)
there is something, that rbehave can ONLY work with rspec1.0.3 together.
So i removed the current rspec, and installed rspec1.0.3 and rspec1.0.5,
but the problem is still there.
The errors are produced with rspec1.0.3 and rspec2.10.0 (in the
attachment).

Thank you for every hint,
Daniel