Forum:Can't Install

i have sims 3 world adventure version 2.0.86 and want to install high end loft stuff expansion pack, but when i run the game... it keep saying that i need to update, when i click update, it say update failed, so i've finally patch manually to version 2.9.10 and i've encountered the same problem when trying to install Sims 3:High End Loft Stuff exp pack...can any1 help me...?!!!!!!