Game Help:Wizard/Crashing and Freezing Post-Load

Okay so you are playing the game, and suddenly the game has problems?

Choose one

I click on a Lot in the bin and the game crashes or freezes!

I click to go into a Neighbourhood and it crashes!

My game crashes when I try to Create-a-Sim!

My game crashes when I try to enter a Lot

I am playing the game normally and it crashes!