Same problem here. Yes, using FTP. Uploads appear to work from either WinXP or Win7, without error. Then, - after uploading on Win7, both WinXP and Win7 can download successfully. - after uploading on WinXP, *both* WinXP and Win7 get this error on download (yes, WinXP fails to download the file it has just uploaded). I think I know what the problem is (or at least, what causes the symptoms), and have a workaround. ZIP file produced on WinXP has two extra XML files in it, compared with Win7 - namely, flagitems.xml and replyitems.xml. On my machine, both contained a trivial content that seemed to do nothing but link back to itself: <!-- flagitems.xml --> - <rss version="2.0"> - <channel> <title>Flagged Items</title> <link>file:///C:/Documents%20and%20Settings/itandetnik/Application%20Data/RssBandit/flagitems.xml</link> <description>Container of flagged feeds</description> </channel> </rss> <!-- replyitems.xml --> - <rss version="2.0"> - <channel> <title>Sent Items</title> <link>C:\Documents and Settings\itandetnik\Application Data\RssBandit\replyitems.xml</link> <description>Container of sent items (reply)</description> </channel> </rss> So, I simply went to C:\Documents and Settings\itandetnik\Application Data\RssBandit\ and deleted these two files. After that, upload/download works fine in all directions.