Greetings agentfisheruk!
Thank you for your report and welcome to our forums!

Please follow the steps to verify your game files:

  1. Open Steam
  2. In Library, click with the right button on the game and select “Properties”
  3. Select the Installed Files
  4. Select Verify integrity of game files….

If the issue still persists, please log out from your Steam account and reinstall Conan Exiles.

We’ll be waiting for your reply!