Hi Mariusz, seems I found another problem 8-) there are some parts in my stock that disappear when trying to 'update model' or 'generate on object from the board' I have a (one part) brd file an the associated 3D-model thats demonstrates the effect. But there seems no way to attach those files to this posting 8-( Lorenz
initialize PCB thickness control from DRC settings in brd file
use layer names from brd file