Zim error report on application starup

This is zim 0.62
Platform: posix
Locale: en_GB UTF-8
FS encoding: UTF-8
Python: (2, 7, 9, 'final', 0)
Gtk: (2, 24, 25)
Pygtk: (2, 24, 0)
Zim revision is:
  branch: zim-trunk
  revision: 738 <email address hidden>
  date: 2014-09-30 21:17:15 +0200

======= Traceback =======
  File "/usr/lib/python2.7/dist-packages/zim/gui/searchdialog.py", line 91, in _search
    self.results_treeview.search(string)
  File "/usr/lib/python2.7/dist-packages/zim/gui/searchdialog.py", line 176, in search
    self.selection.search(self.query, callback=self._search_callback)
  File "/usr/lib/python2.7/dist-packages/zim/search.py", line 254, in search
    self.update(self._process_group(query.root, selection, callback))
  File "/usr/lib/python2.7/dist-packages/zim/search.py", line 353, in _process_group
    contentterms, results, scope, group.operator, callback)
  File "/usr/lib/python2.7/dist-packages/zim/search.py", line 497, in _process_content
    for page in generator:
  File "/usr/lib/python2.7/dist-packages/zim/notebook.py", line 2011, in walk
    for p in self.index.walk(path):
  File "/usr/lib/python2.7/dist-packages/zim/index.py", line 1283, in _walk
    for grandchild in self._walk(child, childpath):
  File "/usr/lib/python2.7/dist-packages/zim/index.py", line 1276, in _walk
    cursor.execute('select * from pages where parent = ? order by sortkey, basename', (path.id,))
InterfaceError: Error binding parameter 0 - probably unsupported type.