• We have updated our Community Code of Conduct. Please read through the new rules for the forum that are an integral part of Paradox Interactive’s User Agreement.
Showing developer posts only. Show all posts in this thread.
You have several mods, chances are at least one of them is broken following the update. Uninstall all mods and try again. If that doesn't work do a reinstallation (and leave the mods uninstalled).

Edit:
Took a more in depth look at the debug log and there are several strings pointing to broken mods so... yeah, it's mods.
 
What I'd suggest is deleting this folder completely as that will remove them though you may also need to reinstall the game.
%localappdata%\Introversion\Prison Architect\mods