[chirp_users] Struggling to get download or upload from TM281

I have the following set up

Kenwood TM281 Windows 10 updated 24hrs ago and latest version of chirp 20200227 FTDI lead from Bluemax49ers diver 2.12.28

I connect via the COM port shows as 7 which is fine and comms setting 9600,8 bits,Parity none, Stop bits 1 Flow Control None

When I click on OK nothing happens the screen returns to the blank chirp page, no memories downloaded and the upload option is greyed out.

Any help appreciated.

73 from John W Holmes K4VMG G4VMG