@buddhi1980 It was a primitive object, I am sorry I was not able to answer before and to react on time. Next months I will have more time to work on the project.
@bermarte, could you give us the code for fractal which was rendered here http://www.fractalforums.com/index.php?action=gallery;sa=view;id=18872
Was it rendered as a primitive object or it's iterated formula?
@zebastian LLdb says that
"It's not valid Mandelbulber settings file. Wrong header
Process 3727 stopped
cMaterialItemView::paintEvent(this=0x000000010bad61a0) + 216 at material_item_view.cpp:163, stop reason = EXC_BAD_ACCESS (code=1, address=0x0) frame #0: 0x00000001000cf858 mandelbulber2cMaterialItemView::paintEvent(this=0x000000010bad61a0) + 216 at material_item_view.cpp:163
The runtime error disappears removing lines 161 to 172.
tabWidget_fractals->setUsesScrollButtons(true); tabWidget_fractals->setDocumentMode(true); tabWidget_fractals->setElideMode(Qt::ElideNone);