Issue #5401 has been reported by Conrad Taylor. ---------------------------------------- Bug #5401: Ruby 1.9.3 interpreter crash http://redmine.ruby-lang.org/issues/5401 Author: Conrad Taylor Status: Open Priority: Normal Assignee: Category: build Target version: 1.9.3 ruby -v: ruby 1.9.3dev (2011-09-27 revision 33347) [x86_64-darwin11.2.0] I'm seeing the Ruby 1.9.3dev interpreter crash when I attempt to use the paypal-express gem. Next, I was not able to reproduce with Ruby 1.9.2. Finally, the steps to reproduce are as follows: $ bundle $ rails s $ click on any of the pay button(s) Note: You may need to setup PayPal sandbox account by going to http://developer.paypal.com -- http://redmine.ruby-lang.org