When I compute the dos of the system ,using Dmol3, the *.outmol shows the warning as belows:

Warning: no tetrahedra information available tetrahedron DOS cannot be calculated

But the comupter don't show any results at all .What 's the matter ？

The suppercell I comute is as follows :

And Kpoints which is used to compute the PDOS ,is

Kpoints                       file     13 13 1 0.000000 0.000000 0.000000

BN991-1N-Defect_DOS.kpoints

Any suggestions ???