Dragging file from smb share to attach to email yields error

[sunbird]

I wasn't sure whether to report this against Nautilus or Thunderbird.

Expected behavior:
* When dragging a file from a smb share to an email, the file should attach.

Actual behavior:
* Attachment is listed as smb://path_to_file, but when you attempt to send the message, thunderbird presents this error:

"Sending of message failed. There was an error attaching smb://path_to_file. Please check if you have access to the file."

Note that attaching works fine if you use the "attach" dialog to locate and attach the file instead of dragging and dropping the file.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: nautilus 1:3.8.2-0ubuntu2
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
Date: Fri Oct 25 11:30:32 2013
GsettingsChanges:
 b'org.gnome.nautilus.window-state' b'geometry' b"'1257x974+661+23'"
 b'org.gnome.nautilus.window-state' b'sidebar-width' b'164'
InstallationDate: Installed on 2012-07-13 (468 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
SourcePackage: nautilus
UpgradeStatus: Upgraded to saucy on 2013-10-20 (5 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.