Welcome to Zoo Admin.
In addition to Yellowrose's questions, I have a couple questions as well.
What operating system are you using?
To confirm: You said the only 2 that work are the Hay Stack and Water Trough. Is it true that the Fish Trough, Fruit Basket, Grain Device, Leaf Device, and Meat Device do not work? The reason I ask is because these are configured similarly to the Hay Stack and Water Trough. But the other 13 objects in the pack are configured differently.