I have the same problem. I’ve been trying to fix it for over a year with no luck. Reader worked great for over 2 years, Upgraded to Snow Leopard and boom… it doesn’t work. I’ve downloaded the “fix” from sandisk, but it just crashes every time I try to run it (downloaded mulitple times to ensure a good download). Little to no support from Sandisk about this problem, and I’m done using their readers. I now use slower USB readers from other manufactures. I don’t know what else to do.