parley crashes

1) Click "create a new collection"
2) In "Properties for Untitled" leave everything as default (the only available language is "American English" anyway), click on "OK"
3) In "Edit Languages" lave everything as default, then click on "OK"
==>The editor window opens, then directly parley crashes with the messages:

Create word type model for summary view
Missing QIcon "practice-start"
Missing QIcon "practice-setup"
Missing QIcon "set-language"
Missing QIcon "set-language"
Clear summary widget
QIODevice::write (QFile, "/home/koen/.local/share/parley/startpagethemecache.bin"): device not open
Clear summary widget
Activating Script "/usr/share/parley/plugins/example.py"
"Parley"
Kross: "Loading the interpreter library for python"
Kross: "Successfully loaded Interpreter instance from library."
Kross: "PythonScript::Constructor."
Kross: "PythonScript::execute"
Kross: "PythonScript::execute result=None"
Activating Script "/usr/share/parley/plugins/google_dictionary.py"
"Parley"
Kross: "PythonScript::Constructor."
Kross: "PythonScript::execute"
Kross: "PythonScript::execute result=None"
Kross: "PythonScript::execute connect object= signal=translateWord(QString,QString,QString) with pythonfunction=translateWord"
Activating Script "/usr/share/parley/plugins/google_images.py"
"Parley"
Kross: "PythonScript::Constructor."
Kross: "PythonScript::execute"
Segmentation fault (core dumped)

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: parley 4:15.12.3-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-75.96-generic 4.4.59
Uname: Linux 4.4.0-75-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Apr 30 17:31:54 2017
InstallationDate: Installed on 2017-04-12 (17 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
SourcePackage: parley
UpgradeStatus: No upgrade log present (probably fresh install)