mcf file is not generating

thanks!again a new error
Long-range electrostatics cannot be computed for box 1 due to its net charge
This error occurred in subroutine main.f90 on step 0.
Fatal Error. Stopping program.
! NPT simulation
! 100 [emim+][pf6-] ion pairs at 400 K at 1 bar
! start from an equilibrated config at 300K, 1 bar, with volume = (30.2 Ang)^3

# Run_Name
npt.out
!

---

# Sim_Type
NPT_MC
!

---

# Nbr_Species
2
!

---

# VDW_Style
LJ cut_tail 14.0
!

---

# Charge_Style
coul Ewald 14.0 0.00001
!

---

# Mixing_Rule
LB
!

---

# Seed_Info
6092016 6092016
!

---

# Rcutoff_Low
1.0
!

---

# Molecule_Files
emim.mcf 100
pf6.mcf 100
!

---

# Box_Info
1
CUBIC
50
!

---

# Temperature_Info
400
!

---

# Pressure_Info
1.0
!

---

# Move_Probability_Info

# Prob_Translation
90
1.00 1.00

# Prob_Rotation
90
30.0 30.0

# Prob_Regrowth
40
0.7 0.3

# Prob_Volume
1
2000


# Done_Probability_Info
!

---

# Start_Type
read_config 50 50 300K.inp.xyz
!

---

# Run_Type
Equilibration 100 10
!

---

update max move size every N steps

# Average_Info
1
!

---

# Simulation_Length_Info
units sweeps
prop_freq 10
coord_freq 10
run 10
!

---

# Property_Info 1
Energy_Total
Volume
Pressure
Density
!

---

# Fragment_Files
species1/frag1/frag1.dat 1
species1/frag2/frag2.dat 2
species1/frag3/frag3.dat 3
species1/frag4/frag4.dat 4
species2/frag1/frag1.dat 5
!

---

one line per fragment

# CBMC_Info
kappa_ins 4
kappa_rot 0
kappa_dih 12
rcut_cbmc 6.5
!

---

END

Check your mcf file to make sure that all the charges add up to zero. The tolerance for charge neutrality is 1E-6. Since you have 100 ionic liquid pairs, the sum of cationic and anionic partial charges must be less than 1E-8.

thanks!if i want to calculate rdf using cassandra?how should i proced

how this liquid.xyz files are generating,i use packmol to generate files but when i give this is in my input file its showing error
in emimpf6 example this 300K.inp.xyz is given but i wanted to know how it has generated.


if i want to create my own cong file how will i do it?