Re: [CC and Milestones, error code 110-578ef827] Stuck On Loading Screen Sims 4

Hi KSMJ13​ 

does it crash at all if you play with no mods/cc at all ?

What platform are you on ? PC or Mac ?

No. it just gets stuck on the loading screen, it makes the load up jingle but keeps loading. i'm on a victus HP laptop

Do you have any LastException files in Documents\Electronic Arts\The Sims 4 when you test with no mods/cc ?

• 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. 

here it is

Hi KSMJ13​ 

you can't attach the file. You need to either upload it to a third party site or copy/paste the content.

oh jeez sorry about that! here you go, thank you so much for your help and patience! :)

<?xml version="1.0" ?><root>

<report><version>2</version><sessionid>ce4bbe70cd027cab6a10bc51</sessionid><type>desync</type><sku>ea.maxis.sims4_64.15.pc</sku><createtime>2026-05-22 14:35:28</createtime><buildsignature>Local.Unknown.Unknown.1.124.63.1020-1.300.000.241.Release</buildsignature><categoryid>developmental_milestone_tracker.py:1130</categoryid><desyncid>ce4bbe70cd027cab6a10bc51</desyncid><systemconfig/><screenshot/><desyncdata>Exception raised while processing zone spin up sequence: 'Object not found: 0x2a1d81e8' (KeyError: 'Object not found: 0x2a1d81e8')&#13;&#10;Traceback (most recent call last):&#13;&#10;&#13;&#10; File "T:\InGame\Gameplay\Scripts\Core\sims4\utils.py", line 179, in wrapper&#13;&#10; File "T:\InGame\Gameplay\Scripts\Server\areaserver.py", line 222, in c_api_server_tick&#13;&#10; File "T:\InGame\Gameplay\Scripts\Server\zone.py", line 512, in update&#13;&#10; File "T:\InGame\Gameplay\Scripts\Server\zone_spin_up_service.py", line 1881, in update&#13;&#10; File "T:\InGame\Gameplay\Scripts\Server\zone_spin_up_service.py", line 1513, in on_update&#13;&#10; File "T:\InGame\Gameplay\Scripts\Server\zone.py", line 741, in on_hit_their_marks&#13;&#10; File "T:\InGame\Gameplay\Scripts\Server\zone.py", line 1142, in _set_zone_state&#13;&#10; File "T:\InGame\Gameplay\Scripts\Core\sims4\callback_utils.py", line 158, in __call__&#13;&#10; File "T:\InGame\Gameplay\Scripts\Server\developmental_milestones\developmental_milestone_tracker.py", line 1225, in send_all_milestones_update_to_client&#13;&#10; File "T:\InGame\Gameplay\Scripts\Server\developmental_milestones\developmental_milestone_tracker.py", line 1130, in _get_milestone_update_msg&#13;&#10;KeyError: 'Object not found: 0x2a1d81e8'rtim=0&#13;&#10;Client Session Time: 49.55&#13; &#10;Num Save Errors: 0&#13; &#10;Num Load Errors: 0&#13; &#10;Current Game State: 0x96d01090&#13; &#10;LoadingScreenActiveFlag: 1&#13; &#10;Origin Version: 13,709,0,6222&#13; &#10;Modded: False&#13; &#10;SystemInfo: Windows 11 10.0.26200 GPU: NVIDIA GeForce RTX 4050 Laptop GPU 32.0.15.9227, GUID: 0E51B865-20EC-11F1-975B-A841F48FA98A&#13; &#10;</desyncdata></report>

</root>