Touchpad, Fedora 25

[Geoffrey Leach]

On moving from Fedora 19 to 25, I find that the touchpad RMB is no longer functional.

The installation was made from DVD, so whatever config is provided by the install is what
I have.

xinput suggests that the RMB is not configured, so when I attempt to enable it, 

xinput --set-prop "SynPS/2 Synaptics TouchPad" "libinput Click Method
Enabled" 1,1 

X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  131 (XInputExtension)
  Minor opcode of failed request:  57 ()
  Serial number of failed request:  20
  Current serial number in output stream:  21

Any ideas? Thanks.