Comment 2 for bug 1237275

This is a duplicate of bug #1235325. Please see that bug for details and note that this can be fixed for saucy because the apparmor policy is allowing the suggested path already. Ie, apparmor policy has:
  /usr/lib/@{multiarch}/thumbnailer/vs-thumb ixr,

due to discussion in bug #1235325 where it is recommended that /usr/lib/$arch/thumbnailer/vs-thumb be used.