Problemas with Rspec

[jorgegetafe]

I have this error using Rspec:

undefined method `evaluate_value_proc' for class `Spec::Matchers::Change' (NameError)

I have:

rails 2.3.4, 2.3.2
rspec 1.2.8
rspec-rails 1.2.7.1

What's the problem? how can i fixe it?

Thanks a lot.

[jorgegetafe]

with:
rspec (1.2.8, 1.1.12)
rails (2.3.3, 2.3.2)
rspec-rails (1.2.7.1, 1.1.12)
cucumber (0.3.101, 0.3.100, 0.3.93, 0.3.92)

and running the last selenium client it worked.