recipe build error "Could not be uploaded correctly"

I get this error message into my mailbox:

----- Forwarded message from Ubuntu Installer <email address hidden> -----

From: Ubuntu Installer <email address hidden>
subject: [PPA mantas] xine-lib_1.1.20-1~natty1_source.changes rejected
X-Generated-By: Launchpad (canonical.com); Revision="14291";
 Instance="launchpad-lazr.conf"

Rejected:
Unable to find xine-lib_1.1.20.orig.tar.gz in upload or distribution.
Files specified in DSC are broken or missing, skipping package unpack verification.

===

If you don't understand why your files were rejected please send an email
to <email address hidden> for help (requires membership).

--
You are receiving this email because you are the uploader of the above
PPA package.

----- End forwarded message -----

From the logs:

dpkg-genchanges: not including original source code in upload

You can work around this by:

* trimming the cangelog (so yours is the first entry to mention 1.1.20) and hardcoding the upstream version
* changing your package to use "3.0 (native)" rather than "3.0 (quilt)"

Arguably launchpad should also always just upload the source tarball, I'll file a bug about that.

To include original source code in upload use -sa flag:
debuild -S -sa