When loading into a save I am booted backed to the world selection page

A similar thing is happening to me as well- I have removed all mods and cc yet this error is still occurring. I have also repaired the game, repaired the save file, deleted the localthumbcache, created new sims 4 folder. I have Twisted Mexis Better Exceptions mod, and it cannot identify the problem either. I will attach the exception here. 

Hopefully this helps!

Please follow instructions here and provide the info asked: [START HERE] Crashing/Back to Map/Endless loading (Patch 117.221) | EA Forums - 12512130

 I merged your post with your other thread.

BE Last Exception

<BetterExceptions><BEversion>v3.14</BEversion><WasBlank>False</WasBlank><TuningLoadFinished>False</TuningLoadFinished><BadObjectCC>False</BadObjectCC><Advice>This is likely due to bad tuning. Check the Summary and Broken Mods section in BE Report.</Advice></BetterExceptions><report><version>2</version><sessionid>b552132401dba0f368ace24d</sessionid><type>desync</type><sku>ea.maxis.sims4_64.15.pc</sku><createtime>2025-08-25 18:23:26</createtime><buildsignature>Local.Unknown.Unknown.1.117.227.1030-1.200.000.673.Release</buildsignature><categoryid>util_injector.py:28</categoryid><desyncid>b552132401dba0f368ace24d</desyncid><systemconfig/><screenshot/><desyncdata>[manus] Error during initialization of service tuning_instance_manager. This will likely cause additional errors in the future. (TypeError: add_mixers_to_snippets() takes 2 positional arguments but 3 were given)&#13;&#10;Traceback (most recent call last):&#13;&#10;&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\instance_manager.py", line 251, in _execute_gen&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\instance_manager.py", line 304, in _execute_func_and_calculate_time&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\sims\masked\v185b\injector.py", line 26, in _wrapped_function&#13;&#10;  File ".\WickedWhims_v185b\**bleep**\main\game_handlers\tuning\tuning_class_injection.py", line 16, in _wickedwhims_tuning_class_injection&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\sims\masked\v185b\injector.py", line 26, in _wrapped_function&#13;&#10;  File ".\WickedWhims_v185b\turbolib2\tunables\quicktune\tuned.py", line 21, in _turbolib_on_quicktune_snippet_tuning_load&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\sims\masked\v185b\injector.py", line 26, in _wrapped_function&#13;&#10;  File ".\WickedWhims_v185b\turbolib2\services\whims_service.py", line 85, in _turbolib_load_whims_into_whim_sets&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\sims\masked\v185b\injector.py", line 26, in _wrapped_function&#13;&#10;  File ".\WickedWhims_v185b\turbolib2\services\affordances_service.py", line 498, in _turbolib_on_tunable_class_tuning_load&#13;&#10;  File "/Users/mycomputer/Desktop/for_compiling/simsten_playableharp/main.py", line 13, in _inject&#13;&#10;  File "/Users/mycomputer/Desktop/for_compiling/simsten_playableharp/main.py", line 37, in simsten_ph_on_instance_managed_loaded&#13;&#10;  File "/Users/mycomputer/Desktop/for_compiling/main_archery.py", line 33, in _inject&#13;&#10;    return new_function(target_function, *args, **kwargs)&#13;&#10;  File "/Users/mycomputer/Desktop/for_compiling/main_archery.py", line 67, in add_arch_sas_to_objs&#13;&#10;    original(self, *args, **kwargs)&#13;&#10;  File "C:\Users\jvict\Documents\Sims 4 Python Script Workspace\My Script Mods\SNB\Scripts\simrealist_snb\util_injector.py", line 28, in _wrapped_function&#13;&#10;TypeError: add_mixers_to_snippets() takes 2 positional arguments but 3 were givenrtim=0&#13;&#10;ClientInfo isn't here</desyncdata></report>
</root>

Last Exception

<?xml version="1.0" ?><root>
<report><version>2</version><sessionid>eb17c486e52d6ca768ace4ad</sessionid><type>desync</type><sku>ea.maxis.sims4_64.15.pc</sku><createtime>2025-08-25 18:34:28</createtime><buildsignature>Local.Unknown.Unknown.1.117.227.1030-1.200.000.673.Release</buildsignature><categoryid>developmental_milestone_tracker.py:1114</categoryid><desyncid>eb17c486e52d6ca768ace4ad</desyncid><systemconfig/><screenshot/><desyncdata>Exception raised while processing zone spin up sequence: 'Object not found: 0x7050d70d' (KeyError: 'Object not found: 0x7050d70d')&#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 1757, in update&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\zone_spin_up_service.py", line 1389, 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 1206, in send_all_milestones_update_to_client&#13;&#10;  File "T:\InGame\Gameplay\Scripts\Server\developmental_milestones\developmental_milestone_tracker.py", line 1114, in _get_milestone_update_msg&#13;&#10;KeyError: 'Object not found: 0x7050d70d'rtim=0&#13;&#10;Client Session Time: 19.15&#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: 13,535,0,6048&#13; &#10;Modded: False&#13; &#10;SystemInfo: Windows 11 10.0.26100 GPU: NVIDIA GeForce GTX 1660 SUPER  30.0.15.1252, GUID: 1D0C1830-F2E4-11EF-8C14-88AEDD2B5F08&#13; &#10;</desyncdata></report>
</root>

The first one is related to a mod that you need to remove (it's an adult mod so no one can help you with that here).

The second one refers to this one: [CC and Milestones, error code 110-578ef827] Stuck On Loading Screen Sims 4 | EA Forums - 9309788 

You can find instructions on how to solve it in the post.

Hello, I'm having the same problem as the girl above. When I try to open any game with any sim, it sends me back to the start menu and there's no way. I've tried several saves, even different random characters, but it won't let me start the game. I've attached the last exception file, but I don't know what to do. All my mods are updated to the latest versions. Can you help me?

Ecco il file

You can't attach the file. You need to open it in an editor and c/p the content.

I tried to insert it, but the system won't load it. I don't know why.
Anyway, I followed all the instructions the girl gave me, I even uninstalled and reinstalled the game, but it won't start, it stops at the first loading screen. I can't take it anymore; every time an update messes everything up.
Can you help me? What should I do?

Acquamarine86​ Non-updated script mods can cause this. Please see the post about script mods in Broken Mods, in Broken/Updated Mods & CC,. You can subscribe to that topic for notifications of regular updates.