When I start Poser 12, I always get an error message that dson failed to load because the dll module was not found.

Also, tonight, I was playing around with different light sets for a scene. In the past, when I selected a light set, it replaced the existing light set. Now, it adds the new light set to the existing light set. Having to delete light sets to add a new light set just adds one more step to the tedious process.