Of the feedback we get, one of the most often asked questions is what to do with a “corrupt archive” error. The generic answer to this would be: download the file again and retry. However, I have the suspicion that 7-Zip might create ZIP files which appear as corrupt to older unpackers. In this case downloading the file again won’t change anything …
For users having this particular problem I recommend you download our installer. Should, for some strange reason, this installer be downloaded and report a corruption, this really means a download error occurred. In this case downloading it again should really solve the problem. An alternative of downloading the installer would be to download an update of your packer/unpacker software from the vendor or use a free program such as 7-Zip.
// Oliver