After upgrading from 1.1 to 1.3m1 most, but not all, binary attachments (images, PDFs, Word documents, etc...) are corrupt when I attempt to download or view them from any links on the main page where they are attached: the documents download, and they're the right size, but are unusable (won't open, produce errors in the program trying to read them, won't display in the browser, etc...). If I download files from the attachment history page they work correctly. Similarly, if I re-attach them they work correctly. Downgrading to 1.2.1 does not affect the problem. I browsed JIRA for a while looking for any similar issues but didn't see anything. Does anyone have any insight, or what additional information can I provide to help isolate the problem? Vincent: Thanks for suggesting $xwiki.refreshLinks() the other day. That solved my missing backlinks problem. Thanks, -- AW