In the attached file I am getting corruption of the solid object when I difference the surface. This will also happen if I extend the surface edge into a closed curve, extrude that curve and then do a difference with two solids. This kind of thing will happen on rare occasion and my solution is always to rebuilt the solid. I switched to V3 beta after experiencing viewport errors with a different object in V2 (this has fixed things in the past) but as the title implies I am getting this error (although different geometry failures) in both versions.
Thanks,
FDP
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