I just downloaded iwork 09 9.1 on my laptop from Apple support website. I have a 2010 macbook running 10.6.8 and I still cannot use iwork 09. The message I get is that this version of Numbers does not work with this version of Mac OS X and says to upgrade my version of Numbers, which I have done. According to the Apple Support website, 9.1 Numbers should work with Snow Leopard or Lion. Any ideas? I have addresses I really need to get to on the numbers program.