On Sep 17, 11:50 am, Jay Levitt <jay+n... / jay.fm> wrote: > Remember that the Mac comes with an old Ruby (1.8.2?) in /usr/bin, and > therefore probably an old Test::Unit in /usr/lib. Make sure you're not > picking that up via $PATH; might just wanna delete it. So it turns out that although I thought was saving my edits to unit.rb, in fact there was a permissions problem and TextMate wasn't actually saving it. Your idea about checking the path helped me figure it out. Thanks. Jeff