No Platform Tool
I doubt this is in the right category, so feel free to move it, if it's not. Anyway, I just updated my Sims 4 game for the second time this week, and was anticipating that new, long-awaited platform...
Forum Discussion
Not to be entirely rude, but I know that's a crock. I got the stairs content patch MONTHS after they did the 64-bit/Legacy Edition split, 'cuz that occurred around June of THIS YEAR for me. Only thing I can think of besides a full reinstall is to try repairing the game - IF my laptop'll cooperate - 'cuz upgrading hardware's outta the question for me. If I can't fix it and no one else has any ideas, I'll just revert to TS2 since that WILL run as I expect it to other than CAS making it crash due to an apparent lack of memory following a Windows update. I'll still read up on the Legacy Edition - maybe that'll hint at something we're all missing that'll work.
https://www.pcgamer.com/you-can-finally-customize-staircases-in-the-sims-4/
dated September 5, 2019.
The Legacy Edition was released on November 12, 2019.
I don't know whether you always kept your game up to date, or you took some time off playing and came back to the pleasant surprise of modular stairs, but they were in the game before the LE existed, so the LE has that feature. It does not contain any new content created after the LE was released, including platforms.
