Note: English is not my native language. I analyzed my LastException files with an AI assistant, and it helped me compile the following bug report based on our findings.
Product: The Sims 4 Platfor...
Ideas
I was building a home on one of the new lots in Royalty and Legacy, and after finishing my build and returning to live mode, the game crashed and I could no longer open that save. I had MC Command Centre installed at the time and the issue persisted after removing my mods folder, and repairing the game. I then made a new save, which worked fine- but then crashed after I re-placed the lot I built. Any other lot I place doesn't cause an issue, so I'm stumped on what I've done to break the game with this build.
I had no custom content furniture in my folder, as well as limited plants and clutter in the build itself.
Hi welshhunni
Do you have any LastException files in Documents\Electronic Arts\The Sims 4 ?
- Delete the ones you have
- Trigger the error again
- Check if new ones are created
- If that is the case, please copy/paste the content here. You can open the file with any text editor.
Deleting the file won't fix your issue. Posting the info is meant for troubleshooting.
Do you have any ladders on the lot ?
There was a pool ladder, which i'd deleted before coming here.
This is the newest LastException after following your instructions. (sorry if this is not how I was supposed to post it, i'm new here)<?xml version="1.0" ?><root>
<report><version>2</version><sessionid>2919eac2e68fa21169960f30</sessionid><type>desync</type><sku>ea.maxis.sims4_64.15.pc</sku><createtime>2026-02-18 19:13:53</createtime><buildsignature>Local.Unknown.Unknown.1.121.361.1020-1.300.000.233.Release</buildsignature><categoryid>build_ladders_mixin.py:91</categoryid><desyncid>2919eac2e68fa21169960f30</desyncid><systemconfig/><screenshot/><desyncdata>Exception raised while processing zone spin up sequence: Unable to acquire ladder data for objID 975616563822985588. (RuntimeError: Unable to acquire ladder data for objID 975616563822985588.) Traceback (most recent call last): File "T:\InGame\Gameplay\Scripts\Server\areaserver.py", line 130, in wrapped File "T:\InGame\Gameplay\Scripts\Server\areaserver.py", line 126, in finally_wrap File "T:\InGame\Gameplay\Scripts\Core\sims4\utils.py", line 157, in wrapper File "T:\InGame\Gameplay\Scripts\Core\sims4\utils.py", line 175, in wrapper File "T:\InGame\Gameplay\Scripts\Server\areaserver.py", line 383, in c_api_client_connect File "T:\InGame\Gameplay\Scripts\Server\zone.py", line 612, in do_zone_spin_up File "T:\InGame\Gameplay\Scripts\Server\zone_spin_up_service.py", line 1881, in update File "T:\InGame\Gameplay\Scripts\Server\zone_spin_up_service.py", line 195, in on_enter File "T:\InGame\Gameplay\Scripts\Server\routing\portals\portal_component.py", line 184, in finalize_portals File "T:\InGame\Gameplay\Scripts\Server\routing\portals\portal_component.py", line 192, in _refresh_portals File "T:\InGame\Gameplay\Scripts\Server\routing\portals\portal_component.py", line 311, in _add_portals File "T:\InGame\Gameplay\Scripts\Server\routing\portals\portal_component.py", line 330, in _add_portal_internal File "T:\InGame\Gameplay\Scripts\Server\routing\portals\portal_data.py", line 538, in get_portal_instances File "T:\InGame\Gameplay\Scripts\Server\routing\portals\portal_data_build_ladders.py", line 30, in get_portal_locations File "T:\InGame\Gameplay\Scripts\Server\routing\portals\build_ladders_mixin.py", line 100, in _get_ladder_portal_locations File "T:\InGame\Gameplay\Scripts\Server\routing\portals\build_ladders_mixin.py", line 91, in _get_blocked_alignment_flags RuntimeError: Unable to acquire ladder data for objID 975616563822985588.rtim=0 Client Session Time: 16.58 Num Save Errors: 0 Num Load Errors: 0 Current Game State: 0x96d01090 LoadingScreenActiveFlag: 1 Origin Version: 13,639,0,6152 Modded: False SystemInfo: Windows 10 10.0.19045 GPU: NVIDIA GeForce RTX 3060 32.0.15.6094, GUID: 1231F224-A10C-11ED-83A6-806E6F6E6963 </desyncdata></report>
</root>
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