I was able to get Riverview to work, by moving the Installed Worlds folder from Documents/Electronic Arts to Desktop. Then I copied Riverview.world from the Installed Worlds folder, and pasted it into C:/Program Files/Electronic Arts/The Sims 3/GameData/Shared/NonPackaged/Worlds Folder. It's the same folder with Sunset Valley.
I am able to see Riverview from the dropdown list. But a line of numbers showed up in the description
I had that problem too. I solved it by doing what slymenstra recommended to make the personalized content is displayed in the game.
I am not a hacker or modder but I got my CC to work. What I did was I copied my resource.cfg files to my desktop. I had 2, I have always had 2 and I have no idea why or how, but my CC has been working so why change what ain't broke?
BACK UP!! your DCCache, your Mods folder, saves, and resource.cfg files.
Copy your resource.cfg file/s to your desk top.
To edit your resource.cfg you have to change .cfg to .txt and say okay when the computer yells at you.
Just copy and paste this into your resource.txt
Priority 500
PackedFile Mods/Packages/*.package
PackedFile Mods/Packages/*/*.package
PackedFile Mods/Packages/*/*/*.package
PackedFile Mods/Packages/*/*/*/*.package
PackedFile Mods/Packages/*/*/*/*/*.package
PackedFile Mods/Packages/*.dbc
PackedFile Mods/Packages/*/*.dbc
PackedFile Mods/Packages/*/*/*.dbc
PackedFile Mods/Packages/*/*/*/*.dbc
PackedFile Mods/Packages/*/*/*/*/*.dbc
Click save and then rename the file back to resource.cfg. Place it back in your Electronic Arts/The Sims 3/ World Adventure folder.
I have another resource.cfg file in my Mods folder/Files. I made it look like this:
Priority 500
DirectoryFiles Mods/Files/... autoupdate
PackedFile Mods/Packages/*.package
PackedFile Mods/Packages/*.dbc
I have no idea if I need it, so skip this if you do not have one there.
Then I copied my files in my DCCache folder into the Misc folder under Mods. I have no idea if I need to delete the DCCache, I didn't and things were working well.
I will update this if people tell me it is wrong, but my game is working, my CC is showing up, I do not lag horribly and my load times are about the same as before.
I had not done before putting Riverview.world in the folder Non packaged worlds, but after doing so, the numbers disappeared and was replaced with the text that corresponded. If you don`t do this the custom objects of Riverview (The stadium, the science building ..) does not appear in the game and the descriptions of households and the streets of Riverview will not appear