IPV6 Isn't working for me as well too
IPv6 worked for me with this version of tomato...IPv6 has worked for you before with other firmware, so that's not an issue? Has IPv6 worked with tomato firmware before? Did you clear your nvram after upgrading before entering your settings?
You do have to reboot after enabling IPv6 before it will start working...and it does take a few minutes to come up most of the time, so you have waited a while for it to get going?
That's about all I can think of at the moment...