"Save..." button deactivated, can't create WPA & WPA2 Enterprise connection

[Chuck Anderson <cra WPI EDU>]

I've had this problem for awhile now (maybe the last year or 2,
certainly Fedora 20 and Fedora 19, and probably Fedora 18 as well).

When creating a new Wi-Fi connection:

Security: WPA & WPA2 Enterprise
Authentication: TLS
User certificate: file in .der format
CA certifcate: file in .der format
Private key: file in .pem format
Private key password: provided

The "Save..." button remains greyed out/deactivated, so there is no
way to save the connection.  This happens both when selecting a new
Wi-Fi network from the Gnome shell, as well as running
nm-connection-editor manually.

Is there a workaround so I can create the connection?

Thanks.