Hey, Bev! If the previous fix doesn't work, you might try what I ended up doing. I kept having installation errors as well (it would get to the Sunset Valley.objectCache file and then freeze) so I tried installing in Safe Mode and it worked perfectly! You might give that a shot! Hope this helps!
How do i start in safe mode exactly...i have windows vista so need someone to explain for that...so many explain stuff and it doesn't make sense to me cuz they are using XP ,2000, ect. thanx to all of u for the advice u did give tho