smartshine unable to add photos on Ubuntu 16.04 and later

Steps to reproduce:
1. Run smartshine (preferably from a terminal)
2. Click the button to "add photos"
3. Select a random image

Expected behaviour:
The image is loaded and displayed in the application.

Actual behaviour:
The application seems to load, but never finishes. The following error message is printed in the terminal:

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
    self.run()
  File "/usr/share/smartshine/smartshine/smartshine.py", line 469, in run
    Gui.put_files_to_the_list(self.fichiers)
  File "/usr/share/smartshine/smartshine/smartshine.py", line 366, in put_files_to_the_list
    im = self.pixbuf2Image(pb)
  File "/usr/share/smartshine/smartshine/smartshine.py", line 332, in pixbuf2Image
    return Image.fromstring("RGB",(width,height),pb.get_pixels() )
  File "/usr/lib/python2.7/dist-packages/PIL/Image.py", line 2063, in fromstring
    "Please call frombytes() instead.")
Exception: fromstring() has been removed. Please call frombytes() instead.

I strongly suspect the API in PIL (https://launchpad.net/ubuntu/+source/pillow) has changed, and smartshine is trying to use the old one.

The image loads as expected in Ubuntu 14.04, while I get the error message in 16.04. Note that 16.04 seems to be the first Ubuntu release with version 3.x of the PIL library, 14.04 used 2.x.

I also get the same error message on 17.04 and presumably artful. I just discovered this when clicking around in the application related to bug 1701648, though I have less of an idea how one might go about fixing this.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: smartshine 0.36-0ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-78.99-generic 4.4.62
Uname: Linux 4.4.0-78-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.6
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Jul 4 23:50:13 2017
InstallationDate: Installed on 2015-10-24 (619 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
SourcePackage: smartshine
UpgradeStatus: No upgrade log present (probably fresh install)