First Boot issues

I'm experiencing issues with the Firstboot package and was hoping to reach out for assistance. To the best of my understanding - the Firstboot package carries out the following: -Package installs *Installs firstboot.plist in Library/Launchd *Installs firstboot.sh in Library/Scripts/(Insert your company/institution name here) -Package Runs postflight on image being created *Sets a number of 'pre-boot' settings which are baked into the image As a result the image will have a number of settings that are set into the image, and a number of settings that are dormant but will be implemented on the first successful boot of the machine. I've used the info at the OS X Deployment Wiki - including the Firstboot template. I've noticed the following: -The firstboot.sh script isn't proceeded by #!/bin/sh ([b]should[/b] it be?) -There's no mention of how to set the permissions on the /Library/Scripts/(insert your compnay/institution name here) directory. As a result, though I've ensured proper permissions on the script itself, I'm unsure of how to so for the directory. Currently my scripts directory is shows as 'no access'. -The firsboot.sh script doesn't run at startup, or delete itself afterwards. Most of the postflight settings don't seem to have applied either. I'm happy to post my actual scripts, and would appreciate any feedback.