I'm not sure where you sent the Dropbox link. I am notified when changes to the ticket are posted at the site listed in the emails you're receiving - https://bugs.launchpad.net/calibre/+bug/1281296.
Post the link in a new comment here at the launchpad site. I will let you know when I've downloaded it, then you can delete the file from your Dropbox account.
I'm not sure where you sent the Dropbox link. I am notified when changes to the ticket are posted at the site listed in the emails you're receiving - https:/ /bugs.launchpad .net/calibre/ +bug/1281296.
Post the link in a new comment here at the launchpad site. I will let you know when I've downloaded it, then you can delete the file from your Dropbox account.