Hi CrackdToothGrin,
Go to the Steam Games library, right click on Crusader Kings II and go to properties. Then go to the BETAS tab and make sure you're opted out of all betas (NONE - Opt out of all betas).
If the game does not automatically update itself, verify the integrity of the gamecache:
* Go to 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 re-downloading these files