Ok im having an issue in one of my familys, i was using the OFB trick to get her pregnant with twins, so she ate some cheese cake and then when she was done i couldnt click on anything, like when i went to make her clean up the plate it flashed the pie menu really quick then dissapeared, so i tred to exit the game and re load, that didnt work, so i moved them to a new lot, and that didnt work. anyone have this happen, I have all expansion packs and stuff packs if that makes a difference.

It sounds like you have a hack that's not compatible with Pets. First backup your entire My Docs/EA Games/Sims2 folder then go through the steps in this faq and please let us know how it goes. http://www.modthesims2.com/article.php?t=139718