READ THIS ENTIRE SET OF POSTS!

Residential from Powerage does NOT work in Carrara without cation and a fair amount of work.

http://www.renderosity.com/mod/bcs/residential/102579/

UNDER NO CIRCUMSTANCE SHOULD YOU LOAD THE FULL SET WITH VEGETATION!!!

It will crash your system!!!

It crashed me, then reset Carrara to default settings.

Not good.

Okay, first the good news. 

You CAN safely load the full set WITHOUT vegetation.

Do this and save as a Carrara file and open the file when you want to use Residential.

The you can add vegetation piece by piece if you desire.