[Pw_forum] Problem with Xcrysden when ibrav=0

[ruizhi zhang]

Dear all
   
  When I try to use Xcrysden to show the structure of PbTiO3(the input file has been attached below), the Xcrysden does not work and shows a message : 
  ERROR: while executing 
  exeu.sh
  /home/zrz/pto/pto.rl.in
   
  But when I modify the input file, change ibrav=0 to ibrav=1, and remove the CELL_PARAMETERS card. Then the Xcrysden works well. 
  Is there something wrong? Or the format of CELL_PARAMETERS card is improper?
   
  Thanks in advance
  Regards, ruizhi
   
  ****************************************
  Here is the input file
  &control
    calculation  = 'vc-relax'
    restart_mode = 'from_scratch'
    pseudo_dir   = '/home/zrz/espresso-3.1.1/pseudo/'
    outdir       = '/home/zrz/taisuanqian/tmp/'
 /
 &system
    ibrav=0
    celldm(1)=7.50,
    nat=5
    ntyp=3
    nbnd=25
    ecutwfc=30.0
    occupations = 'fixed'
 /
 &electrons
    conv_thr = 1e-8,
    mixing_beta=0.3,
 /
&IONS
  ion_dynamics = 'damp',
 /
 &CELL
  cell_dynamics ='damp-pr'
   /
ATOMIC_SPECIES
  Pb    207.2      Pb.vdb.UPF
  Ti    47.867    Ti.vdb.UPF
  O     15.9994   O.vdb.UPF
ATOMIC_POSITIONS
  Pb    0.000    0.000    0.000 
  Ti    0.500    0.500    0.500 
  O     0.000    0.500    0.500 
  O     0.500    0.500    0.000 
  O     0.500    0.000    0.500 
K_POINTS {automatic}
  4 4 4 0 0 0
CELL_PARAMETERS 
  1.0   0      0
  0     1.0    0
  0     0       1.0

   

 		
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