Error when publishing a snap

[Alberto Mardegan]

Hi all,
  I'm encountering an error when publishing a newer version of a
facebook webapp. Here are the changes from the previous version:

http://bazaar.launchpad.net/~mardy/webapps-core/amazon-snap/revision/154

Note that the amazon and google webapps, which have exactly the same
changes, could be published just fine. I even tried running "snapcraft
clean" and rebuilding the package, but it didn't help:

  http://paste.ubuntu.com/23873837/

Any idea of what's going wrong?

Ciao,
  Alberto