Sometimes native Mac OS tool doesn't like unzipping large files. We know of two ways around this:
Method 1: Download The Unarchiver (free) and use it to unzip the file. This usually works for most people.
Method 2: Comfortable in the Terminal? Hit Command + Spacebar and Search for Terminal and open it.
Next, navigate to the folder where your zip file is stored.
For example, you can use the command ls to list all the folders in a directory, then type cd DirectoryName to go there. Once in the same directory as the file you want to unzip, in the Terminal window type unzip filename.zip
If you're still having issues, please contact us and we will help you as soon as possible!