Having recently lost all my settings, I am trying to get going again with WSPR

The rig is a TS480, with a homebrew interface to the rigs data socket and a 'Prolific' USB-serial for control ..

I can transmit and receive OK but I cant get WSPR to change the Band .. I get .. 'set_freq: error = Invalid parameter'

Can anyone advise the WSPR TS480 settings .. I have (I hope) attached what I currently have ...