So I already submitted a bug report for this but wanted to see if anyone else had the issue. I am using Lightwave 2018.0.7 and LWCad 2020.1 LW
I made an arc shape primitive and was trying to use the profile tool to just have a simple square box follow along the curve. With the tool active I go to select the arc shape, sometimes it will work just fine but while adjusting settings lightwave will crash close with no crash error window, other times it will crash close immediately when I try to select the arc shape. It's possible I'm doing something completely wrong which is making it crash but I have no idea what it might be.
I was looking for a tool that would mimic the sweep modifier in 3D Max. Profile seems to do it but it just crashes on me.