Vanishing world, but everything else still in the game. [SOLVED]

So yesterday i installed Toddlers Stuff and the game would not open, so i took it out and installed the Fitness Stuff pack and everything is working only there's some interesting things happening 


I have all the CAS, objects, interactions and even the lots that come with City Living but...



San Myshuno is nowhere to be found nor is Granite Falls or Magnolia Promenade. 

So yeah i'm a little confused, the game is running smoothly, everything is working fine but yeah if there was a way to fix this i would like to know! Thanks in advance there's no big rush but help would be appreciated! 

When you have Toddlers Stuff installed and you don't want it any more:
Go to your install folder Program Files\The Sims 4
Open Game, Open Bin
Open the file RldOrigin.ini with notepad, scroll down to the end.
You'll see 3 items marked 138.
Insert a semicolon in front of these items and save the file.
You can do that for any pack you don't want anymore.
(you can always remove the semicolons to get these packs back in your game)




Example for removal of Vampires (items 132)

Thank you both so much for your replies!! Ageha first option was the way to go! I hadn't tried to update back to Toddlers because I assumed it just wouldn't work since it hadn't the first time, but I gave it another shot to be sure and surely enough all the worlds are back and Toddler Stuff is working aswell! I must've done something wrong the first time, anyway thank you both so much!