May 2022 - last edited May 2022
You must have Cottage Living. This bug shows up after the 1st Finchwick Fair occurs in the game after installing that pack. It is a known bug. So please me too the first post in this thread and add any comments you might have or want to by replying to the first post.
[OPEN] Can't build a rocket - Answer HQ (ea.com)
As @m_baldo said, there is a temporary fix for it until the devs fix it permanently. Just follow this link.
[INFORMATION] Common Game Fixing Mods - Hero Approved - Answer HQ (ea.com)
Scroll down to Simvasion in the Known Modders that Often Post Bug Fixes section and follow that link and you can find it on his site. @simvasion
Hope this helps.
June 2022
Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Every time (100%)
What is your current game version number? Current
What expansions, game packs, and stuff packs do you have installed? I have all game packs and expansions
Steps: How can we find the bug ourselves? Go and try and build a rocket ship
What happens when the bug occurs? you can't build the rocket ship
What do you expect to see? to be able to build a rocket ship to explore space
Have you installed any customization with the game, e.g. Custom Content or Mods? Never used.
Did this issue appear after a specific patch or change you made to your system? No
I buy a rocket ship. Yet my Sim can't build it. How can I explore space without it to further my Sims career.
June 2022
I'm having this same problem now. I see a lot of posts from different times but I think the latest patch of the pronouns screwed things up. I tried deleting the whole sims 4 folder, then restarting but still can't build anything.
June 2022
I've been having this issue since the latest patch only. I do run some mods, but I have tried the rocket on fresh saves with mods completely removed and still had the issue. My favourite gameplay is Super Sims (maxing all skills, aspirations, etc), so not being able to use the rockets is frustrating!
June 2022 - last edited June 2022
Fixed in Patch 1.89.214/1.60
If you're still experiencing this issue, please create a new thread.