I MUST be doing something wrong.
I took your MACADD, changed it to my adapter address and went through the instructions again.
The one thing I noticed while going through the directions is when I went to save MACADD in the pico editor I got an error..security I think. I did a sudo -s in terminal and was then able to save it.
Could that be the problem?
Correct me if I am wrong, but if it's "working" when I reboot, I should then be able to launch Safari and get out to the web. correct?
Permissions, I did sudo -s before starting all the steps in the script.
When you restart, do ifconfig in terminal, if it worked you will have a mach address.
In network preferences I use DHCP with manual address 192.168.1.2, probably not needed DHCP should do.
And after you do the script you don't need to restart to see if it worked. From text file "1. The MACADD will be reset after changing a Location, waking the computer from sleep, or changing the state of the network interface. To use the script again without having to restart, enter the following command: sudo SystemStarter start MACADD"
I would trash the MACAAD folder and start again