Thanks Toxe, GKD.
The working method, and all those "alternatives/options" is part of the LW problem I guess. It may be ok for someone who is working , as a job, full time with it, but for those like me as a hobbyist just to "disorganised".?

I found a similar problem with Rhino. And whilst better, the 7.52 version of Amapi is very iffy/crashable for me.

In Hexagon there are some working proceedures which, similarly,if you are not doing a lot with it you forget the "proper way"!

I guess it all goes back to my fitting and turning background of the 1940s, but MoI seems so logical for me. Then, the current C6Pro Vertex Room seems pretty adequate for the secondary manipulation of those MoI files.

I havent yet found a good reason to reload LW to the computer.
 
It all keeps the mind busy.

bwtr