Have tried to add a couple SwitchLinc dimmers with the same result:
eb 20, 2017, 1:41:22 PM
PowerLinc Linking - entered discovery linking mode (240 seconds)
PowerLinc Linking - received module button pressed from 43.14.D2
PowerLinc Linking - syncing PowerLinc links (address 3D.98.94)
PowerLinc Linking - . . adding: INSTEON plc link to controller 43.14.D2, flags 03, group 01, data 00 00 FF
PowerLinc Linking - . . adding: (not added -- probably already exists)
PowerLinc Linking - sync complete
PowerLinc Linking - PowerLinc links updated
PowerLinc Linking - sending engine version request to 43.14.D2
PowerLinc Linking - adding PowerLinc to module's database
PowerLinc Linking - sending engine version request to 43.14.D2
PowerLinc Linking - adding PowerLinc to module's database
PowerLinc Linking - sending engine version request to 43.14.D2
PowerLinc Linking - adding PowerLinc to module's database
PowerLinc Linking - sending engine version request to 43.14.D2
PowerLinc Linking - adding PowerLinc to module's database
PowerLinc Linking - sending engine version request to 43.14.D2
PowerLinc Linking - adding PowerLinc to module's database
PowerLinc Linking - sending engine version request to 43.14.D2
PowerLinc Linking - adding PowerLinc to module's database
PowerLinc Linking - sending engine version request to 43.14.D2
PowerLinc Linking - adding PowerLinc to module's database
PowerLinc Linking - sending engine version request to 43.14.D2
PowerLinc Linking - adding PowerLinc to module's database
PowerLinc Linking - sending engine version request to 43.14.D2
PowerLinc Linking - adding PowerLinc to module's database
Error Linking - device failed to send engine version information
Error linking failed
PowerLinc Linking - entered discovery linking mode (240 seconds)
PowerLinc Linking - received module button pressed from 43.14.D2
PowerLinc Linking - exited linking mode