[Gmsh] otimize 3D netgen crashes

Mark Smith piedycat at yahoo.com
Thu Aug 23 18:05:45 CEST 2018

gmsh 3.06 or 4.0.0Dear Gmsh forum,
I have a geo file which I 3D mesh with tetrahedra, I can optimize the 3D mesh with Optimize 3D but if I use Optimize 3D (Netgen) gmsh crashes with the following error:
Problem signature:
  Problem Event Name:    APPCRASH
  Application Name:    gmsh.exe
  Application Version:
  Application Timestamp:    aa80aa78
  Fault Module Name:    gmsh.exe
  Fault Module Version:
  Fault Module Timestamp:    aa80aa78
  Exception Code:    c0000005
  Exception Offset:    00000000009545c0
  OS Version:    6.1.7601.
  Locale ID:    2057
  Additional Information 1:    c684
  Additional Information 2:    c684f09528fb57884ca928a5bc428f55
  Additional Information 3:    cf6d
  Additional Information 4:    cf6d62335bc704516de51f24e907807e

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Is this a known problem? My 2D mesh looks good but the quality of the 3D mesh is dubious & I was hoping the optimize 3D Netgen might improve the situation?RegardsMark

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