<html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> </head> <body bgcolor="#FFFFFF" text="#000000"> Hello, I tried to speed up my simulation by choosing Regular Parameterization (with flag skipEqualMaterials to 1) instead of Nested Parameterization, because my Volume got a lot of voxels with the same material. It did indeed speed up the simulation by a factor of 15, but some projections of my CT simulation failed (error: segmentation fault; crash). Now I saw that during the initialization phase of gate it states the following: ### WARNING ### setSkipEqualMaterials at false !! The Geant4 method is not safe since the release 9.5 - Need to be fixed I am pretty sure that this warning is somehow connected to the warning. Does anyone know if there had been a bug fix for Geant4 v10.2.2? In the appendix there is a screenshot of the error. Cheers, Nico <pre class="moz-signature" cols="72">-- B.Sc. Nicolas Triltsch Masterand Technische Universität München Physik-Department Lehrstuhl für Biomedizinische Physik E17 James-Franck-Straße 1 85748 Garching b. München Tel: +49 89 289 12591 <a class="moz-txt-link-abbreviated" href="mailto:nicolas.triltsch@tum.de">nicolas.triltsch@tum.de</a> <a class="moz-txt-link-abbreviated" href="http://www.e17.ph.tum.de">www.e17.ph.tum.de</a></pre> </body> </html>