Could you try deleting all the tct game files/folderd you currently have, and then redownloading the new build from itchio? The game folder should be inside the first folder when you open it up.
so i figured out why it wasn't working. I downloaded the new build in the app instead of the website. I went ahead and deleted the app one and redownloaded the base build online. It is working now with the dlc. Thank you for your help! :)