Can't Use Ruby 1.9.1 Just Yet

I had wanted to switch to Ruby 1.9 for my current project. I'm using a fairly minimal number of dependencies and didn't expect any problems. Unfortunately for what ever reason RSpec fails silently under Ruby1.9.1 but works properly on Ruby1.8.7 (at least on my machine). Since I don't have the time to track it down right now it looks like I'm reverting back to Ruby1.8.7 for the time being.

Hopefully I'll have time to dig into it later in the week.