At this point I have given up on using DSM5. It is near useless for me, and I have reverted back to version 4. I produce a lot of complex designs and have discovered endlessly had issues of faces being transposed onto other areas of my objects. Faces and splines not closing. endless doubling of surfaces resulting in stacked objects at the same location. For example if you make a cylinder (a pipe) and try to pull a design though it. you will generate a line on the other side that has never been touched by a pull action. It then leaves these traces in side of the wall. If I try to make a pattern around a cylinder then pull it in. to make a series of holes. it will leave a outlines on the other side. Producing a huge mess and head ache. I could go on and on listing. but I have found that DSM5 just does not function like dsm4 at all. I'll be honest. This is reminding me of Carbide create. They fix one problem and break other features that work fine. And when one complains it falls on deaf ears. The list of errors I've come across so far in the latest build are so profound they can NOT have been missed when operation error checking before release.