Operating System: macOS Catalina - version 10.15.7
LightWave Version: 2020.0.2 (build 3226) (Mac64) 14-Jul-2020

A LightWave crash consistently occurs when using the fence tool.
It happens immediately after placing the second point.

Will be fixed in the next hot patch.

Can you please make a screenshot with numeric panel and Snap panel visible.

It seems that I am not able to reproduce this crash.

Does it happen all the time, or just randomly?

After reading your reply, I realized that I may have manually installed LWCD incorrectly which explains the unexpected behavior.

To remedy the problem, I uninstalled both LWCAD version 2020.01 & the latest version of LightWave version 2020.0.2. I then downloaded recent versions of both software applications, re-installed each and repeated the same fence tool process. It now works as expected.

My apologies for the false alarm.