If you are using Mac, please follow this guide https://www.capitalismlab.com/caplab-porting-kit/ to install Capitalism Lab on Mac using Porting Kit.
In Step 2 of the guide, it states:
"Download Capitalism Lab: Download the game package for Mac from this link: https://caplab.b-cdn.net/CapitalismLab.zip"
Instead of downloading from the default link, which is for Capitalism Lab version 10.0, please download the following file for version 11.0 instead: https://caplab.b-cdn.net/CapitalismLabV11.zip