Happy to say problem solved. Wrong permissions! Not sure how this happened.
Usually create my scripts in TextEdit and they typically default to 644 for
permissions. After creating the script I ran chmod +x which should change it
to 755. My script was set to 711.
Currently I'm not using this script at imaging and merely want to add
another AD group to AD plug-in.
Thank you all for your quick responses.
Cyrus
