I am also having this issue. Whenever I try to place a lot I downloaded from the gallery it won't place in willow creek and will just throw me to the worlds view mode. I've tried restarting the game and computer but it keeps happening. I tried using a different lot (house) in a different location and the same thing still happens. 😕mileysad:
Try resetting your user files as described in the factory reset described in this post: http://answers.ea.com/t5/The-Sims-4/FAQ-Troubleshooting-Steps-amp-Known-Issues/m-p/3621199
You won't loose anything. Just make sure to not delete any files and make a backup.
Then try on a fresh game to see if it's save game related.
