Considering that no one else is having this problem, I still assume the issue is likely on your end.I used the Megadownloader and compared against the same file downloaded from Gofile. Both were broken. I triple checked by re-downloading from Mega. The uploaded file is corrupt.
In fact, I just downloaded from Gofile, and extracted it with 7Zip, and everything went fine here. So, again, I urge you to use a downloader so it can verify it with the original, and make sure you did not have packet loss or something while downloading.
You might also want to update 7zip, if it is more than 6 months old.