NEB calculation for crystal

[nat zip]

Hello all,

I am trying to perform a neb calculation on a 2 2 1 supercell of Al2K2O7Sb2 to determine the mep of a potassium ion jump. However, when I run the input, the calculation terminates after the initial replicas are created. I tried to freeze the coordinates of all atoms except for the potassium 2 (atom 6) of interest, but it looks it only worked for the first five. Any help would be greatly appreciated.