Dear Gmsh users,<div>I have a problem with saving a file in .msh format.</div><div>I use Gmsh together with FreeFem++: when using gmshload I have this message:</div><div><br></div><div>assertion fail: (area > 0)</div><div>
<br></div><div>If I delete the physical surface in file .geo this error disappears, but I have a wrong mesh (without the triangles in the surface)</div><div><br></div><div>Thank you in advance for any help,</div><div><br>
</div><div>Best regards,</div><div>Pietro</div><div><br></div><div><br></div>