Hey Murray,
I'm new to Julia as of today, but this might help.
1. Besides installing Julia and the BBEdit language module as you did,
here is my script:
#!/usr/bin/env julia
print("Hello, World!\n")
2. With the script open in BBEdit:
* check in the lower left, that the language widget is set to Julia
(assuming you have that language widget showing - check prefs if not).
* click the little file icon upper right corner, then click
"Permissions", and make sure all users are allowed to execute.
3. Bingo.
# Hello, World!
--
- Bruce
_bruce__van_allen__santa_cruz__ca_