When trying to launch w3af_gui in kali-rolling, the splash screen appears and then it crashes out with the output below.

root@kali:~# w3af_gui
Gtk-Message: Failed to load module "canberra-gtk-module"
Starting w3af, running on:
Python version: 2.7.9 (default, Mar 1 2015, 12:57:24) [GCC 4.9.2]
GTK version: 2.24.25
PyGTK version: 2.24.0
w3af version:
w3af - Web Application Attack and Audit Framework
Version: 1.6.0.5
Distribution: Kali Linux
Author: Andres Riancho and the w3af team.
Traceback (most recent call last):
File "/usr/share/w3af/w3af_gui", line 97, in <module>
_main()
File "/usr/share/w3af/w3af_gui", line 93, in _main
sys.exit(main())
File "/usr/share/w3af/w3af_gui", line 88, in main
gui_main(profile, doupdate)
File "/usr/share/w3af/w3af/core/ui/gui/main.py", line 929, in main
MainApp(profile, do_upd)
File "/usr/share/w3af/w3af/core/ui/gui/main.py", line 409, in init
self.pcbody = pluginconfig.PluginConfigBody(self, self.w3af)
File "/usr/share/w3af/w3af/core/ui/gui/pluginconfig.py", line 624, in init
self.pan = self._buildpan()
File "/usr/share/w3af/w3af/core/ui/gui/pluginconfig.py", line 644, in _buildpan
self.w3af, "standard", self.config_panel)
File "/usr/share/w3af/w3af/core/ui/gui/pluginconfig.py", line 245, in init
if self._getEditablePlugin(plugin, plugintype):
File "/usr/share/w3af/w3af/core/ui/gui/pluginconfig.py", line 301, in _getEditablePlugin
plugin = self.w3af.plugins.get_plugin_inst(ptype, pname)
File "/usr/share/w3af/w3af/core/controllers/core_helpers/plugins.py", line 244, in get_plugin_inst
plugin_inst = factory('w3af.plugins.%s.%s' % (plugin_type, plugin_name))
File "/usr/share/w3af/w3af/core/controllers/misc/factory.py", line 46, in factory
raise BaseFrameworkException(msg % (module_name, ie))
BaseFrameworkException: There was an error while importing w3af.plugins.audit.global_redirect: "cannot import name process_pdf".