This happens when a download link is broken by the file needing to be reuploaded, or the file moving. It can happen from time to time. Please scroll down to the bottom of the game description as @Twich54 mentioned and report it as an outdated release. The modder will repair the link asap.
I am closing this question and moving it to Answered Questions as this question has been resolved. If you have any other questions please post them in our Questions Area.