The following stack trace might be a bit too familiar for those of you who have tried the latest RSpec (1.2.4) with NB 6.5.1:
from /usr/lib/ruby/gems/1.8/gems/rspec-1.2.4/lib/spec/runner/options.rb:119:in `run_examples' from /usr/lib/ruby/gems/1.8/gems/rspec-1.2.4/lib/spec/runner/command_line.rb:9:in `run' from /usr/lib/ruby/gems/1.8/gems/rspec-1.2.4/bin/spec:4 ...The good news is that the issue is fixed in 6.7 builds and for 6.5.1 you can fix it by downloading this file and copying it to the netbeans_install_dir/ruby2 directory. You may want to make a backup of the existing nb_rspec_mediator.rb file in that directory first.
Update: There was still an issue with running focused tests as reported by Asfand Yar Qazi. I've now changed the link to point to a newer version that should fix that problem.