Apologies for what might be an obvious problem, but when I set up for the ‘flashlight’ tutorial, I am unable to complete the first step: creating guide lines. I have imported the flashlight.3dm file, have the points set up, and have Smarttrack turned on, Osnap set on ‘point’. Click on point, drag line, click and it’s gone. Spent an hr+ with no luck. Am I missing something obvious? V6 running on macbook air 10.13.6. Thanks in advance