Hi,
maybe a little bit late, but I saw your post just now.
2 questions:
– Do you have a problem with download of zip-files or a problem with unzipping them?
– If the problem is with unzipping, are you working on a Mac?
Explanation: The Mac's built-in unzipper (BOMArchiveHelper) doesn't unzip zip-files generated by 4images. Use StuffitExpander instead…