I have an apple computer running Leopard with python 2.6. I downloaded the latest version of scapy and ran \"python setup.py install\". All went according to plan
python setup.py install
I was able to get this working by #commenting out the route6 import statment in all.py within the scapy mod directory.
After that, I was able to bring up the interactive scapy prompt.
So the real solution to this issue is to make sure you have a compatible route6 mod.