Thanks for prompt response.

So I moved my wallet file over from my pc to my mac, and it opened fine and synchronised.  When I checked plugins, 2FA was now selected, and the Trusted Coin icon was in the status bar of the wallet.  So far, so good.  However, when I tried to do a transfer though, it crashed... Error message, and then said could not contact server.

Doesn't look like the mac version 2x is quite there yet

I upgraded my wallet from 1.98 to 2.03 using Windows 7, setting up my new wallet with 2 factor authentication, and it works perfectly for sending BTC from this new wallet.

However, having upgraded my mac 1.98 wallet too (which wasn't as straightforward - same problems as others had), and then tried to create a new 2 FA wallet by importing the seed from my Windows created wallet, it synchronises without issue, but I am unable to use 2FA - it just sends straight after entering my password.  Under plugins, 2FA is not greyed out, but there is no tick against it.  When I try to select it, the box is ticket and the message comes up that 2FA has been enabled, but then when you click OK, it goes back to being unselected.

I tried setting up a new 2FA wallet from mac, but it crashes/closes during the registration process when you go to enter your email address after the Trusted Coin Ts&Cs (which do not show either).  You try to reopen the wallet (which is shown as incompletely created), and get an error message, and again the wallet closes.

Any thoughts?