[Wien] Regarding Super cell

[Indranil mal]

Dear sir/ Users
                      After making a 223 super cell for a (216 F43m) space
group I'm trying to replace  one host atom (anion or cation) with a smaller
size atom then in Xcrysden the smaller atom not showing bond to any atoms.
Along with this the structure file changes by xnn if I do accept the  and
start xsgroup then the space group changes after accepting that I am
getting the error
Commandline: x lstart -p
Program input is: "5 -6.0 "

  SELECT XCPOT:
  recommended: PBE    [(13) GGA of Perdew-Burke-Ernzerhof 96]
               LDA    [( 5)]
               WC     [(11)  GGA of Wu-Cohen 2006]
               PBESOL [(19) GGA of Perdew etal. 2008]
  SELECT ENERGY to separate core and valence states:
  recommended: -6.0 Ry (check how much core charge leaks out of MT-sphere)
  ALTERNATIVELY: specify charge localization (between 0.97 and 1.0) to
select core state
At line 130 of file insld.f (unit = 20, file = 'B1Ga72As_LDA_MBJ.struct')
Fortran runtime error: End of file

Error termination. Backtrace:
#0  0x14f62065831a
#1  0x14f620658ec5
#2  0x14f62065968d
#3  0x14f6207cfa33
#4  0x14f6207d001a
#5  0x14f6207ccfcd
#6  0x14f6207d112c
#7  0x14f6207d24bc
#8  0x562615f286ca
#9  0x562615f2ed95
#10  0x562615f23e2e
#11  0x14f61fcb7b96
#12  0x562615f23e59
#13  0xffffffffffffffff
0.064u 0.000s 0:00.06 100.0% 0+0k 0+512io 0pf+0w
error: command   /home/dps/WIEN2K/lstart lstart.def   failed


How ever If I do not accept the space group change then I got the error
MULT not equal please check xnn out file.

please help
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