I was wondering if anyone else has exhibited this. Basically what is happening with me is that whenever I throw a party, regardless of what kind or how many sims live in the house, I can only invite two people. It's become very frustrating.
Your game likely believes your computer can not handle more sims on a lot.
Put the following lines into your userstartup.cheat file:
intProp maxNumOfVisitingSims 8
uintProp maxTotalSims 50
uintProp maxTotalHumans 35
uintProp maxTotalPets 15
You can change the numbers to anything, only the pets and humans should add up to the maxTotalsims number. If you allow too many sims, your game may slow down though, depending on your computer specs.
Also, I've got some graphical problems. Whenever a dog or a person digs a whole, the ground becomes see-through. I can see through the ground. Also, I've had some errors with swimming pools. For example, the corners still have ground covering them.
Video card drivers needed? How much RAM do you have? Additionally, I believe others have reported issues with the curved corners for swimming pools. I know they did not work properly in my game either (have not tried using them since loading FT though).