On 31 Aug 2014, at 18:32, Gildas Hamel wrote:
I experienced the same thing after upgrading to Yosemite beta, because Yosemite points to Ruby 2.0 (/System/Library/Frameworks/Ruby.framework/Versions). I added Ruby 1.8 to make it work again.
TextMate will automatically fetch ruby 1.8 on Yosemite (if running a command that requires it).
So things are supposed to work out-of-the-box on 10.10 without the need to manually edit or install anything.