Batkrook92 Please provide a dxdiag. Click Windows key-R, enter dxdiag in the run box, wait for the scan to finish, click "Save all information," and save the file to your desktop. From there, you can attach it to a reply using the paper clip (Attachment) icon included with the other formatting buttons.
One cause of the "failed to launch game" error is trying to launch it after it's crashed and without restarting your computer first, in case that's relevant.
The lastexception and lastcrash files didn't attach, likely because this site flags them due to the first line of text. I can't actually do anything with a lastcrash, but if you want to provide a lastexception, you can delete that first line and try to attach it again. Or you can copy the text of the file and paste it into a reply.
Thank you - dxdiag attached!
Here is the lastexception:
<?xml version="1.0" ?><root>
<report><version>2</version><sessionid>1280270bb7bf313d69402442</sessionid><type>desync</type><sku>ea.maxis.sims4_64.15.pc</sku><createtime>2025-12-15 15:08:27</createtime><buildsignature>Local.Unknown.Unknown.1.120.117.1030-1.200.000.685.Release</buildsignature><categoryid>posture_state_spec.py:47</categoryid><desyncid>1280270bb7bf313d69402442</desyncid><systemconfig/><screenshot/><desyncdata>[manus] Error during initialization of service tuning_instance_manager. This will likely cause additional errors in the future. (SystemError: unknown opcode) Traceback (most recent call last): File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\instance_manager.py", line 283, in _execute_gen File "T:\InGame\Gameplay\Scripts\Core\sims4\tuning\instance_manager.py", line 304, in _execute_func_and_calculate_time File "T:\InGame\Gameplay\Scripts\Server\interactions\interaction_instance_manager.py", line 50, in on_start File "T:\InGame\Gameplay\Scripts\Server\interactions\interaction_instance_manager.py", line 105, in _use_animation_constraint_cache File "T:\InGame\Gameplay\Scripts\Server\animation\animation_ac_cache.py", line 160, in read_ac_cache_from_resource File "T:\InGame\Gameplay\Scripts\Server\animation\animation_ac_cache.py", line 176, in _merge_cached_constraints File "T:\InGame\Gameplay\Scripts\Server\postures\posture_state_spec.py", line 47, in __new__ SystemError: unknown opcodertim=0 Client Session Time: 22.19 Num Save Errors: 0 Num Load Errors: 0 Current Game State: 0x96d01090 LoadingScreenActiveFlag: 1 Origin Version: 13,614,2,6133 Modded: False SystemInfo: Windows 11 10.0.26200 GPU: NVIDIA GeForce RTX 4080 32.0.15.9144, GUID: CBFC90EC-C808-11F0-BBE2-047C165791D5 </desyncdata></report>
</root>
