[TxMt] convert selection to entities

[Dylan Nichols]

Whenever I try to use the 'Convert Selection to Entities' command it 
results in the following error.

env: ruby -KU: No such file or directory

I'm using TextMate 1.5 (v906) on OS 10.3.9. Typing ruby -v in the 
Terminal reveals I'm running ruby 1.6.8

Thanks for any help.