DL_POLY_2 has detected an unacceptable degree of inaccuracy in the screening
function near the radius of cutoff in reciprocal space, which
implies the Hautman-Klein Ewald method will not be sufficiently
accurate.
Action:
The user should respecify the HK control parameters
given in the CONTROL file. Either the convergence parameter should be
reduced or more k-vectors used. (Warning: reducing the convergence
parameter may cause failure in the real space domain.) (See 4.1.1).