[Pw_forum] error in generate kpoint

[fataneh bostan afroz]

Dear
I want  to generate kpoint by using kpoints.x functional  for 36 36 24 mesh
but I has this error

bravais lattice  >> 4
     filout [mesh_k]  >> kpiont
     enter celldm(3)  >> 1.6
     mesh: n1 n2 n3   >> 36 36 18
      20000
%%%%%%
     Error in routine kpoints (1):
     nptx too small for this mesh
%%%%%%
please guide me
thank you
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