I purged v4 again and I reinstalled my old ver.3, which works as it should.
Will ask for a refund, and then - ever an optimist - I will try the Pro version
Hello again, reporting as promised. I got a refund on the purchase, thank you, and I did try the Pro version just now. My optimism was misplaced, as the newly downloaded, updated ver 4 .01 Pro does connect, but does not work at all, not even crippled as it with my original upgrade. Multiplicity found the laptop,

but the cursor stayed home on the primary computer. So, I am now back to version 3, and happy with that. eom