Comment 1 for bug 1444347

This appears to be the problem I encountered after upgrading from devel r1 to devel r2. The full traceback follows:

Fatal error: /tmp/com.ubuntu.developer.rschroll.beru_1.0.0_armhf.click failed to install.
WARNING:root:Signature check failed, but installing anyway as requested
Traceback (most recent call last):
  File "/usr/bin/aa-clickhook", line 14, in <module>
    from apparmor import click
  File "/usr/lib/python3/dist-packages/apparmor/click.py", line 15, in <module>
    import ctypes
  File "/usr/lib/python3.4/ctypes/__init__.py", line 7, in <module>
    from _ctypes import Union, Structure, Array
ImportError: /usr/lib/python3.4/lib-dynload/_ctypes.cpython-34m-arm-linux-gnueabihf.so: undefined symbol: _PyTraceback_Add
Traceback (most recent call last):
  File "/usr/bin/click", line 86, in <module>
    sys.exit(main())
  File "/usr/bin/click", line 82, in main
    return mod.run(args)
  File "/usr/lib/python3/dist-packages/click/commands/install.py", line 66, in run
    quiet=not options.verbose)
  File "/usr/lib/python3/dist-packages/click/install.py", line 457, in install
    path, user=user, all_users=all_users, quiet=quiet)
  File "/usr/lib/python3/dist-packages/click/install.py", line 441, in _unpack
    user_name=None)
GLib.Error: click_hooks_error-quark: Hook command '/usr/bin/aa-clickhook' failed: Child process exited with code 1 (6)