I am having the following problem. All non-tip versions of the attachments do not include the web app context/virtual root. In our installation we have installed Confluence into TomCat 5.0.25 under a "Confluence" context. This problem prevents users from accessing older versions of the attachments via the URL given by confluence on the history expansion for an attachment. The older version of the attachment is available as long as the URL is properly typed in.

For example:

Tip URL: http://169.172.211.156:8080/confluence/download/attachments/12/BUG.jpg?version=2

Non-Tip URL:
http://169.172.211.156:8080/download/attachments/12/BUG.jpg?version=1

Notice the Non-Tip URL is missing the "Confluence" context.