[Gmsh] Zero self-intersecting faces flagged as error

[Tibi Chelcea]

I'm having some problems with Gmsh 2.5. I'm trying to mesh a pretty
complicated model (250 physical volumes, 2427 physical surfaces); 2D meshing
works, but 3D meshing (Delaunay algorithm) fails with this error message:

Error   : Self intersecting surface mesh, computing intersections (this
could take a while)
Info    : 0 intersecting faces have been saved into 'intersect.pos'
Info    : Done meshing 3D (330.426 s)
Info    : 20554 vertices 59210 elements
Error   : ------------------------------
Error   : Mesh generation error summary
Error   :     0 warnings
Error   :     1 error
Error   : Check the full log for details
Error   : ------------------------------


It seems that there are no intersecting faces, but 3D meshing still fails.
Does anyone know what the issue is here? I kinda doubt it's an issue with
the geometry, since sometimes Gmsh sometimes finishes.

When trying to apply Netgen (Frontal) algorithm, Gmsh just crashes.

Thanks,
Tibi
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