Put this package in your mods folder and you'll get the base game loading screen when running ambitions. ONLY USE if your latest installed expansion is ambitions! They changed the Logo for ambitions- it is now centered based on the test (The Sims 3) instead of the plumbob, and the plumbob is OFF CENTER! Really frustrating.
Want a different load screen for a different expansion? Check the post below for a tutorial on how to make one!