@crinrict I'm having this issue as well at 20 Culpepper. However, it is only certain apartments I've downloaded. For example, I have 3 different apartments by 3 different creators downloaded to my library. I can only place 1 of those apartments, the other 2 I get the "can't place due to fixed object" error. I also get this error occasionally with the other Culpepper apartment with the balcony.
Another strange thing I notice is the game will let me place the "error" lot if it is off, or not lined up with the exact boundary of the apartment lot. But this is unacceptable because everything is shifted over or down an entire row.
My game is an existing save I've had for a while.
I always turn on bb.moveobjects on - doesn't help.
