Just installed Elastix 1.6, the zap channels not shown in FOP, then I try to edit retrieve_op_conf_from_mysql.pl, => it is not functioning, then I try to add the button manually by edit the file op_buttons_additional.cfg, => button is being displayed in fop, BUT it cannot monitor the status for zap channel, i.e. the icon does not change and animate even the zap channel is being used. any help ? thanks in advance. (zap channel are two pieces of X100p.)