Segmentation fault with Pry-Plus when called through RSpec

[rdaniels]

I'm running into a Segmentation fault inconsistently when a add binding.pry to my spec file. What's strange is that it sometimes works, this error is intermittent. The specific error is:

/home/vagrant/.rvm/rubies/ruby-1.9.3-p448/lib/ruby/gems/1.9.1/gems/pry-stack_explorer-0.4.9.1/lib/pry-stack_explorer/when_started_hook.rb:6: [BUG] Segmentation fault
ruby 1.9.3p448 (2013-06-27 revision 41675) [x86_64-linux]

I have pry-plus and rspec-core 3.0.0.beta1 in my gemfile
pry -v = Pry version 0.9.12.4 on Ruby 1.9.3
ruby -v = ruby 1.9.3p448 (2013-06-27 revision 41675) [x86_64-linux]

I'm running my ruby dev on a Linux 10.04.4 Virtualbox called from a Vagrantfile.
Thanks for the help!