Hi, The icc compiler warns about a: include/G4VSurface.icc(307): warning #175: subscript out of range fNeighbours[4] = axis1max; If one looks into the source code than fNeighbors is indeed only defined from 0..3, so fNeighbours[4] is out of bounds and will probably cause a seg fault. Ciao, Andreas
Thanks for the report. The problem is now fixed in the development tag "geom-specific-V06-02-04" and the fix will be included in the next release.