Thank you, you two^^ (Though those suggestions, Starry, did not make a solution to my problem, but thank you<3)
However for some reason I am missing some objects when I open them in a different map or in Object Maker. For instance, the moving willow trees, they were there yesterday, but when I opened Object Maker to see them, the folder was missing in the Feral Heart in-game. I placed the files back in again, but they didn't appear. This is happening for some of my objects. Though I didn't delete any objects/folders. Some object names appear, but when I click to load them, a message tells me that they cannot find the file, though it is there. Someone said the best to do is re-install Feral Heart again, however I don't think you have to?