ference and current results files exist
            name_ref = strcat(drv.path_in,drv.name,"_ref.pos");
            name_cur = strcat(drv.path_out,drv.name,".pos");
            if (exist(name_ref,'file') ~= 2)
                fprintf(2,'\nMissing reference results file!\n');
                this.deleteFile(name_cur);
                status = rmdir(drv.path_out); %#ok<NASGU>
                return;
            end
            if (exist(name_cur,'file') ~= 2)
                fprintf(2,'\nCurrent results file 