problem to use link structure plug-in in Mint 17.3

[Christopher Schleiff]

When I click on "zeige link-struktur" (I guess it's show link map in original) I just get a message within the text below

This is zim 0.60
Python version is sys.version_info(major=2, minor=7, micro=6, releaselevel='final', serial=0)
Gtk version is (2, 24, 23)
Pygtk version is (2, 24, 0)
Platform is posix
Zim revision is:
  branch: pyzim-trunk
  revision: 672 <email address hidden>
  date: 2013-04-30 19:27:20 +0200

======= Traceback =======
  File "/usr/lib/python2.7/dist-packages/zim/gui/__init__.py", line 819, in _action_handler
    method(*arg)
  File "/usr/lib/python2.7/dist-packages/zim/plugins/linkmap/gui.py", line 41, in show_linkmap
    dialog = LinkMapDialog(self.ui, linkmap)
  File "/usr/lib/python2.7/dist-packages/zim/plugins/linkmap/gui.py", line 64, in __init__
    self.xdotview.set_dotcode(linkmap.get_dotcode())
  File "/usr/lib/python2.7/dist-packages/zim/inc/xdot.py", line 1335, in set_dotcode
    self.set_xdotcode(xdotcode)
  File "/usr/lib/python2.7/dist-packages/zim/inc/xdot.py", line 1350, in set_xdotcode
    self.graph = parser.parse()
  File "/usr/lib/python2.7/dist-packages/zim/inc/xdot.py", line 1046, in parse
    DotParser.parse(self)
  File "/usr/lib/python2.7/dist-packages/zim/inc/xdot.py", line 866, in parse
    self.parse_graph()
  File "/usr/lib/python2.7/dist-packages/zim/inc/xdot.py", line 875, in parse_graph
    self.parse_stmt()
  File "/usr/lib/python2.7/dist-packages/zim/inc/xdot.py", line 921, in parse_stmt
    self.handle_node(id, attrs)
  File "/usr/lib/python2.7/dist-packages/zim/inc/xdot.py", line 1021, in handle_node
    shapes.extend(parser.parse())
  File "/usr/lib/python2.7/dist-packages/zim/inc/xdot.py", line 568, in parse
    p = self.read_polygon()
  File "/usr/lib/python2.7/dist-packages/zim/inc/xdot.py", line 483, in read_polygon
    x, y = self.read_point()
  File "/usr/lib/python2.7/dist-packages/zim/inc/xdot.py", line 466, in read_point
    x = self.read_number()
  File "/usr/lib/python2.7/dist-packages/zim/inc/xdot.py", line 460, in read_number
    return int(self.read_code())
ValueError: invalid literal for int() with base 10: '48.4'