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IcratoX

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It's indeed important to know if your checksum is VQLL right at the start of the game, or if you are seeing this after you are returning to the menu from a playsession. Basically the checksum always changes after a playsession, and you need to restart the game to get the correct checksum (in case of 1.103 - WQLL) back.

If that is not the case, then the first thing I'd try is to verify the integrity of the game cache if you are running the game on steam. If you are using the gamersgate version of the game (non-steam), you'd need to do a clean re-install. I've described both processes below. The full clean-reinstall should also be tried if verifying the integrity of gamecache in steam did not work.

Verifying:
  • Open your Steam games library
  • Right click on "Crusader Kings II" and select "properties"
  • Click on the tab "Local Files"
  • Now click on "Verify integrity of game cache"
  • Wait until this process is finished, if any files are missing/corrupted it will notify you at the end of the process and automatically start with redownloading these files

Full clean re-install:
  • Important: Go to '..\Documents\Paradox Interactive\Crusader Kings II\save games\' and copy all the save games you want to keep outside the folder
  • Uninstall Crusader Kings II
    For Steam users: uninstall the game from within steam by right clicking on the game and select "Delete content".
  • Go to the folder where you installed Crusader Kings II in, and check if the Crusader Kings II folder is removed. If not, delete the entire folder
    For Steam users: Installation folder can be found at: '..\Steam\SteamApps\common\'
  • Go to '..\Documents\Paradox Interactive\' and remove the entire Crusader Kings II folder
  • Reinstall the game, make sure you install the game outside the 'C:\Program Files\' or 'C:\Program Files (x86)\' folders, as it can cause issues with permissions
 

AndrewT

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I will bet money that this is after playing the game then resigning. That is exactly what it is supposed to do, change the checksum by one digit. If you exit the whole game and then start it against will be fine, right?
 

BritNavFan

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Thanks for the replies. Yes, it starts with WQLL, and the first letter increases by 1 each time I resign and return to the starting screen, and it resets if I restart the game.

I thought it was odd that the checksum was wrong by exactly one letter.
 

IcratoX

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Thanks for the replies. Yes, it starts with WQLL, and the first letter increases by 1 each time I resign and return to the starting screen, and it resets if I restart the game.

I thought it was odd that the checksum was wrong by exactly one letter.

No, as long the checksum at the start is WQLL when on patch 1.103 it is working as it should be. The moment you go back to the menu of the playsession you'll always see a different checksum.