[2022] PINNED: Experiencing crashing issues with 3.5.1 "Fornax"?

Since it's update time again, its time to remind everyone that if you're experiencing crashing issues, the first step to try is disabling your mods:

In the Paradox Launcher, Click Playset, and click Add New Playset, enter the name "No Mods". Do not add any mods to this playset, and run the game.

If you're still experiencing crashing issues after this, in the Launcher, go to Game Settings and choose "Borderless Fullscreen" or "Windowed" video mode.

If you're trying to play a 3.4.5 save on 3.5.1, you can roll-back to the previous version:
Right Click Stellaris, Go to Properties, Betas Tab, and choose "3.4.5 Rollback" from the dropdown.

If none of these solve your problem, you can go to support.paradoxplaza.com and open a ticket, and Customer Support will be able to help you further!

Originally posted by HuggiePuggie: Not crashes but version mismatches is my issue with this newest update. No mods. No matter what I do or what I roll back to now I can't play with anyone... big sad

Your best bet is to delete the steamapps/stellaris/ folder, (not the one in /documents/) and then right click Stellaris > Local Files > Verify Game Files, and be sure you're not opted-into any Betas (in the Steam Library, it should say "Stellaris" with nothing in brackets)

Originally posted by ZhAAr: Upon updating the launcher, I started my game and lo all of my buildings and leaders were gone. All my planets had empty leaders, all my science vessels leaderless, leaders could not be purchased, not sure what happened. I'm going to play KOTOR 2 for a few days and hope whatever the heck happened unhappens. Either that or I'm going to have to start a new game.

If you're trying to finish an in-progress save from 3.4.5 on 3.5.1, your best bet is to roll back to the 3.4.5 rollback branch. Right Click Stellaris -> Properties -> Betas tab and choose "3.4.5 Rollback" from the dropdown menu. After you're done with that save, change the dropdown back to None to start a new game on 3.5.1.

Originally posted by Maniak: So i was trying to modify my agreement whit one of my vassals a prospectorium that recently got tier 3 since i noticed that i was feeding it 160% of my research instead of the previously agreed 75%, immediately after i press the "Negotiate Terms" button the game crashes. Upon checking my other vassals after restarting the game (a protectorate and a tier 1 scholarium) the game ran fine but the prospectorium still crashes me. Of course this is a fully vanilla game whit a fresh start on 3.5.1

This is a known issue. We have a hotfix tentatively scheduled to come out tomorrow to address this (and several other) issues that have cropped up around Toxoids release.

Originally posted by Montecalm: Why aren't these updates properly tested before releasing them? I am getting fed up contacting Paradox support for help. They never reply promptly, and often make me wait weeks with an answer. How would Paradox like it if I bought the game then made them wait weeks before paying for it? Horrible customer service.

The updates are tested extensively before launch. However, the patch notes also expressly say that save file compatibility is not guaranteed, and to roll back if you want to continue an in-progress save.

Originally posted by arc361: I am starting to get Country Resources desync at year 2354. Multiplayer of course

You can report desync issues here[forum.paradoxplaza.com].