This isn't because we messed up our objects or did anything wrong, but a game update released at that time meant that ALL objects made before it no longer work with any game which has Pets or this patch installed and all objects that DO work with Pets/1.27 Patch will not work without it!

Sims Wiki: If The Launcher Does Not Workĭue to a major change in the game that occurred with the Pets Expansion pack, all our objects require EITHER the Pets Expansion pack OR the Pets patch for the base game patch 1.27 for PC or patch 1.26 for Mac.Sims Wiki: Getting Custom Content To Show Up.Sims Wiki: How to Install Package Files.