Once DL_POLY_2 encounters the molecules directive in the FIELD
file, it assumes the following records will supply data describing the
intramolecular force field. It does not then expect to encounter
directives not related to these data. This error message results if it
encounters a unrelated directive. The most probable cause is
incomplete specification of the data (e.g. when the finish
directive has been omitted.)
Action:
Check the molecular data entries in the FIELD file and correct.