Not sure what happened with your download, what your browser, etc. but my download was flawless and left the de-archived Zoe folder where I expect every download via Safari. This file 'Zoe20040210.zip' was placed in my trash per my Safari settings. Maybe this is a different file then you downloaded.

Smooth sailing for the download. My brief experience with Zoe (have the accents been removed?) is favorable. Takes up some disk space but I have about 29K messages, 700+ documents, 2000+ names and over 26K urls indexed.