Crash when retrieving Sim from neighbour's town
Please see this article for assistance on submitting a Support request and for a workaround for the issue. Reinstalling your game with temporarily resolve the issue but will revert your progress to the last time you uploaded to the Cloud.
Puppy is missing, floating or invisible
Workaround to fix the issue: The puppy may be held in your Sim's arms in an invisible state where the Sim appears to be holding nothing. If the puppy is missing, check the Sim who was performing the Puppy Odyssey quest to see if it is in their hands. If so, try calling the Sim to the park to find the puppy. For more information see this article.