title: Breakpoints not being hit in RubyMine in user code-- but will in ruby source
body: <p>A colleague is using RubyMine (version 6) to run selenium and cucumber tests and up until yesterday afternoon was debugging happily along.  </p>
  
  <p>Now however, RubyMine isn't stopping on his breakpoints in our code.  They will stop however, in source ruby code such as kernel.rb.</p>
  
  <p>This started suddenly, and the user in question swears he hadn't updated any gems or programs in the interim.  Where can we start to look when diagnosing?</p>