So every time I close petz since putting in a new horse file I get this message that says: Sorry: "Can't save Atlas to disk. You may need more space on your hard disk." After playing around with it a bit the horse shows up in game, I can play with him fine but when I restart the game it's as if he's reset. So if I paint him/write in his bio it will all be gone next time I open the game. My game (P4) is in my documents, I have plenty of hard drive space and this has never happened to me before. Any ideas?
What Lovecraft said! But if you're already running it as admin, then I have no idea what it could be beyond his .pet file being corrupt, so you could try a "new" version of him by either re-adopting or re-downloading him (however you got him).