title: "Frequently Asked Questions" layout: default
If you are sure that the zip file is correct, that error often comes from a corrupted content. An ajax request, if not prepared correctly, will try to decode the binary content as a text and corrupt it. See this page.
That happens if you try to handle to much data. If possible, try again with a small (some KB) zip file to see if your code is correct. See this page for more informations.