Reaping chickens

The Grim Reaper is just hanging around the chicken coop because he wants to reap a chicken, but he is having difficulty completing the task.  the chickens all go in the coop, and he gets stuck with a greyed out "plead".  The chickens can be requested to come out the coop, but then Grim doesn't then take action. I had to reboot the game to get him to get back on task.   Note: this is occurring in the Horse Ranch world after release of the new Grim pack, haven't tested other worlds yet.