SSL_VPN with MAC

I have my first user trying to connect with her brand new Macbook (home machine) to our Fortigate SSL-VPN. I have a couple dozen Windows users (home machine) connecting in successfully. She gets through I think to the 98% level, then gets an error: Connection error. Can not connect to VPN server. When I look on the Fortigate VPN log, I don't see anything referencing this user. Any help would be greatly appreciated.