about bluedot command in Harness module

Q1. I faced this error when I use "Create Physical Conductor".  (attached jpg file)


draw 2 paths and connected them with "Bluedot" command > "Bundles" Command > select wires > create physical conductor


Q2. When I create 1 path

1. In Bluedots command(and when I change paths) - there are created red dots (I can adjust)

    - sometimes gray dots I can't adjust. how can I adjust it? Why this gray dots created?