almost 3 years ago - CO_Avanya - Direct link
Here's a link to the support article on how to verify game files:

https://support.steampowered.com/kb_article.php?ref=2037-QEUH-3335

If that doesn't help, please add the launch options -noWorkshop and -disableMods to test if any mods affect this.

How To Set Launch Options
  • Right-click on the game title under the Library in Steam and select Properties.
  • Enter the launch options you wish to apply in the box (be sure to separate each code with a space). Should look like this:
    -noWorkshop -disableMods
  • Close the game's Properties window and launch the game.