Hi CraigH,
Welcome to the Centrify community!
Regarding to your SmartCard issue, there is some information we need to verify in order to further troubleshoot the problem:
1) When you insert your card into your reader - do any indicator lights flash?
There should be at least one LED on the reader to show card activity. If not, this could be a hardware problem on the smartcard reader.
2) Have you tried performing the clean up and re-install steps mentioned in below link:
Please also made sure the SystemCACertificate is properly loaded into Keychain Access as well.
The full steps are in the "Loading DOD intermediate certificates into the keychain" section of the Smartcard Express Online Help:
If the Keychain is properly setup, make sure your browser(s) are also configured to use the identity certs on the card. See the "Configuring web browsers and mail clients" section of the same help documentation above.
If you are still seeing issues, please also check through the "Troubleshooting tips and other topics" section and let me know how it goes.
Kind regards,
Ivan Chan