env: ruby1.9: No such file or directory - FIX

In the root of a rails 3 app:

$ rails
env: ruby1.9: No such file or directory
$ script/rails
env: ruby1.9: No such file or directory
$ script/rails generate
env: ruby1.9: No such file or directory
$ ruby -v
ruby 1.9.1p378 (2010-01-10 revision 26273) [i386-darwin10.2.0]

$ mate script/rails

#!/usr/bin/env ruby1.9 --> #!/usr/bin/env ruby

In the root of a rails 3 app:

$ rails

env: ruby1.9: No such file or directory

$ script/rails

env: ruby1.9: No such file or directory

$ script/rails generate

env: ruby1.9: No such file or directory

$ ruby -v

ruby 1.9.1p378 (2010-01-10 revision 26273) [i386-darwin10.2.0]

$ mate script/rails

#!/usr/bin/env ruby1.9 --> #!/usr/bin/env ruby

Hi, how did you install it? RVM? MacPorts? ruby-lang.org?

-Conrad