I build an awesome house and my sims won't go in!!!

Ok, so I build this awesome house in the Sims 2. I was so proud of it because it looked like it came from the game and it didn't. I built it!! So I made a family and moved them in. They won't go in the house. They keep saying there was something in their way when there isn't anything there at all. They wouldn't go in to eat or go to the bathroom. Then they were peeing on themselves because they wouldn't go in. They just stood there and made that sign to say there was something in there way. I even moved them out and back in and got the same thing. Can you please help me??? Thank you...