%1 seems to be running on another display on this machine. Running %1 and %2 at the same time can cause the loss of mail. You should not start %2 unless you are sure that %1 is not running.
% 1 blykt al te rinnen op in oar skerm op dizze kompjûter. It tagelyk útfieren fan% 1 en% 2 kin ta berjochtenferlies liede. It wurdt net oanrieden om% 2 te begjinnen, of jo moatte der wis fan wêze dat% 1 net aktyf is.