Have you considered that it might be due the removal of Flash ? first step was to shut it down but there was no forced removal the removal happen on the one before last mayor Win Updates. I got aware of it the moment some programs did not work correctly any longer. Going into the poser Ui folder you might find an Air folder with a Flash LSMGUIAIR file ! you might find this file also in Poser 12. I am not running Poser 12 so can not check it . but it might be that it still needs a local Flash working. so instead of searching what Win has added try to search what got removed. I reinstalled Flash actually an older version below 10.3 and allot of older Programs worked again like a charm.