HELP: Engagement& Marriage

So my Sim and her boyfriend both wanted to be engaged to each other. I pressed propose and then I pressed Engagement, it would just freeze them alone. I reset them by using boolprop testingcheatsenabled true, clicked on my Simblender and set there relashionship to Engaged. I bought an altar and everything for the party;Clicked on Get Married, and they would just freeze at the altar. I though well maybe it will work If they stayed there long enough(at the altar). Turns out snow came and they got frostbitten, after 2 Sim days at the altar they were still frozen while everything else was still normal. I reset them and tried again about 3 times. I am aware there is this altar at MTS or insimenator that lets you marry anyone on the same lot you are. I've been trying to find that Mod. but I can't seem to get any hope while trying to find it. Can some one help me! Why do my sims Freeze every time I try to get them Married or Engaged? Where is that Altar that will allow me to do so(If had the altar before,but I had deleted my computer user account and made a new one so my downloads files were empty when I made a new account, *its fine now, i replaced all downloads except for that one*)

I do not have the best punctuation. Sorry. Thank You!

Geanna.