Previus Patches no longer working

[Chaingun]

Try moving or deleting settings.txt in the EU4 user folder (e.g. C:\Users\Admin\Documents\Paradox Interactive\Europa Universalis IV on my system).

 

[Chaingun]

Hmm it should work in old versions, but if you run new version again you will need to redo the procedure.

Verify that custom_mapmodes in settings.txt contains at most six numbers (rather than ten), because old versions could only handle six on load for some not-thought-through reason. I.e. that part of file looks like this:

custom_mapmodes={
    24 1 4 3 2 5 -1 -1 -1 -1
}

 

[Chaingun]

Ok, so after re-deleting the .txt file, I've discovered the new problem had nothing to do with changing the settings in-game. I am able to play non ironman and ironman on cloud, but as soon as I click local the game crashes.

Ok then it's different: Try moving all save games in Europa Universalis IV\save games to a different folder, you can put the ones back that are version compatible.