That is incredibly strange. Is there a chance your computer might see it as a malicious programme and is blocking it? Because as I said, the file is complete when I downloaded it and unzipped it.
That is bizzarre. I'm not sure where else I can host this to potentially bypass this issue. My only suggestion is to delete all instances of it, refresh your cookies and try to download it again. I'm not an expert for this sort of issue but worst case scenario maybe if you google it you can find a fix.