Appaloosa Plains missing

I don't use Custom worlds, Even if I install just  Riverview, Appaloosa Plains, disappears

@mysticdiva2  I'm having a hard time finding anything to help here (a couple of threads elsewhere but no answers).  I guess the basics are, do you have any other EPs that come with homeworlds, i.e. Twinbrook or Bridgeport, and are they available for selection?  If you start a new game elsewhere, do you see the content from the Pets EP in that world?  And does AP show up if you create a clean folder without uninstalling and reinstalling the game, even after it's disappeared once already?

On a fresh Game with nothing in it, Just the Expansions and Stuff Packs, Appaloosa Plains is there. As soon as I install Riverview I go back into the Game and Appaloosa Plains is missing.It happens with any world installed. Bridgeport shows as well as Twinbrook.

It does show in C:/ProgramFiles In the Origin Games Sims 3 EP05 (which is Pets) Caches Folder. it Shows 2 files..AppaloosaPlains.ObjectsCache and TCC text document. Then in Shared folder it shows a Non-Packaged folder that has a Library folder which shows the objects for Appaloosa. Then in the Worlds folder it shows Appaloosa Plains.

So I cant figure out why its not showing in the game... a friend is having the same problem. so EA told me its a Bug. 

@mysticdiva2  My only other question is whether you still see the rest of the Pets-related functions in the game, i.e. the actual pets, or the objects they use.  That would show whether it's the entire expansion that's not showing up, or just AP.

I also wonder what would happen if you uninstalled Pets, cleaned the registry, added the worlds you wanted, and then reinstalled the EP.  (Obviously, it would be a good idea to back up or remove your game folder when you did this, and clear the cache files, and maybe test a clean folder, etc.)

I'd try to recreate the bug, but I have a Steam install and patch 1.67, so I'm not sure whether I'd see the same thing.

I actually fixed the problem.. When Appaloosa Plains was in the game, I saved all the lots to the library. Then copied that folder to my desktop. So when I found it was still missing, I copied all the Library files to the folder in my document Sims 3 Library folder and Lo and Behold Appaloosa Plains is there in full, I even made a sim and saved the game... 

I do know that when I first started a whole new game load, with no worlds in there Appaloosa Plains was there... It disappeared as soon as I installed a world.. EA could not fix the problem as I had a couple of days on the phone with them and all their suggestions did not fix the problem. I am just thankful that I was a little smarter then they were and I am very persistent.

Thank you so much for your responses, It was appreciated. I use Origin, not Steam so maybe its an origin problem I dont know...

@mysticdiva2  Congrats on solving this issue on your own, and thank you for posting a description of your solution.  If someone else has the same problem, I'll just point them to your post.

I still don't know why it worked, or what was causing the issue (and I guess EA doesn't either), but if your game is cooperating now, then that's what matters.

It didnt last. When I Saved my game and quit, went back in later it was gone again... am gonna cry now... I am just gonna go play my Sims 4

@mysticdiva2  Is your computer a pc or mac? If your computer is a pc do you use OneDrive?

I have an Asus Laptop and dont use One Drive..