Only one out of four expansions installed work. [SOLVED]

Context
The Sims 3 base game worked just fine, so I decided to install four DLCs. Those DLCs were:

70's, 80's and 90's Stuff ; Supernatural ; Ambitions ; and Seasons

Issue
When I play the game, only 70-90's content is available beyond the base game, aside from clothing.

I can only access 70-90's extra town, and no special life-states are available. In the launcher, it says all the packs I've enabled are enabled, but since the loading screen's always 70-90 and their town is the only one I can choose, I'm really at a loss here.



Thanks,

Hypothesis
It turns out, as I hoped, that I'm an idiot and I've not installed Supernatural, and I hypothesize that maybe only 70-90 and Supernatural are the ones that add towns out of the four I've chosen. Once I've launched and tested the game we'll see if this is correct. If it is, I'll edit this response to my own thread saying so, and I think it will resolve my issues, since this theory addresses and explains every issue I have.

<3

Conclusion
Our heart-wrenching tale of trials, sacrifices, and loss has come to an end. In the end our heroes have resolved the conflict with the plan they've executed and all is right in the world. "Rejoice," says Main Character, for our woes are now naught, and our lessons, have been taught.