I’m having the same issue, running El Capitan 10.11.1.
When I open SecureAccess 3.0 I get a message window that says, “This application only runs on SanDish flash drive.”
I’m not worried worried about recovering my old vault as that’s all backed up, I would just like to be able to use my existing one with the SecureAccess software!
Thanks in advance for any assistance.