Error: "A deleted triangle is a neighbor of a non deleted triangle"
I try to mesh the geometry of the convex hull of a brain into tetrahedral elements lh-plial.stl. I defined a Ball to have increased mesh resolution at a certain point in the geometry.
When I try to 3D mesh the .geo file lh-plial.geo, the results are very bad, although the geometry does not seem to be very complicated. I tried to use different characteristic lengths and meshing algorithms, but GMSH either crashes with the error "A deleted triangle is a neighbor of a non deleted triangle", generates a segmentation fault, or produces very bad results (gmsh-error.log, gmsh-bad.log).
Is this the bad quality related to this error or what am I doing wrong?
Thanks in advance for the help,