I dragged 'gridflow' to /Library/Pd folder. and then.,
/Library/Pd/gridflow/gridflow.pd_darwin: dlopen(/Library/Pd/gridflow/gridflow.pd_darwin, 10): Symbol not found: __ZN11imageStruct5clearEv Referenced from: /Library/Pd/gridflow/gridflow.pd_darwin Expected in: flat namespace
/Library/Pd/gridflow: can't load library
any idea?