I really don’t know the reason, but… I have a model divided in 3 polygroups, set the division level to 1, and click on grp split button. Every time Zbrush crashes. Really appreciate any help!
Matteo
Have you tried with other models to see if it’s just this one that’s causing the problem?
Would it be possible to upload the model to see if other users get the same results with it?
Yes, I’ve tried with other 2 models but it’s the same 
there’s a simple example of model that present the same problem
Attachments
cube.zip (226 KB)
I have duplicated the problem. I’m not sure what the cause might be, but will try to find out for you.
oh thank you so much!
how was this cube created. Did you bring it from another 3D app and then hit auto group or did you create it using ZSpheres? How did you establish the groups, by hiding pieces of the mesh then hitting group visible?
Yes, I’ve imported a simple cube from maya then clicked on UV group in zbrush, turn on wireframe and in polygroups clicked on grp split.
i’ve noticed that if you try grouping by uv’s and they are not good uv’s this will sometimes happen.