Hi, With regard to hte crash when using 2nd order elements, this behaviour persists if exactly the same model is imported in IGES format. Attached for convenience. Regards, Roland. -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: AssemCassette.IGS URL: <http://www.geuz.org/pipermail/gmsh/attachments/20081117/94a81b8e/attachment.IGS>