I have created a world and placed a lots of lots in it. Once finished, I exported and installed the world and ran The Sims 3. I went into the world I created. Now the problem is, there are no lots on the whole world. The places when I placed the lots appear as Blue spaces. When I go into edit-a-town mode, those blue spaces are gone and now I have to place ALL the lots again manually.

This is my first time and I've been to many tutorial sites but found nothing to help me with this problem. Any help would be appreciated.

What version of the base game?
What version of CAW?

Game Help:Patch_Table^wiki
Game Help:TS3_Patching Find Gameversion^wiki
Game Help:TS3_Patching Find Gameversion#How_to_find_your_Create-A-World_version^wiki