i keep a folder of saved terminals (*.term files) which i use to open color-coded terminals (blue.term, red.term, green.term, etc).
after using the CTRL-SHIFT-o from textmate to open a terminal at the current files directory, double-clicking my .term files in finder no longer opens a terminal, until i close all terminals and re-open Terminal.app, then the *.term files work again until i next CTRL- SHIFT-o from textmate.