Hmm... Strange.
Anyone else getting this?
This is just an unimplemented feature (Zip64 most likely) by whatever is being used to unzip the file. Later versions of WinZip fix this as does the file explorer on Windows Vista or later. On the Mac, the built-in "Archive Utility" doesn't implement this, but the built-in command line tool (unzip) does. On Linux unzip also works just fine, as does PeaZip. This is not a bug with the zip file.