make a compressed zip folder with the files in it that is not corruptes or otherwise 'invalid'

The zip folder for this program, which usually contains a txt file with a registration code, and the setup executable file(s) for the giveaway of the day, is "invalid". I am fairly confident that this is NOT my personal computer error, please check the download, and notify Give-Away-Of-The-Day users when a replacement has been uploaded with a working file system. I would LOVE to try this software, and provide actual feedback, but at the moment, this cannot happen.