Comment 1 for bug 1031134

I started getting similar looking traces (see below) after upgrading from 0.54 to 0.56.
However, as far as I can see, everything works alright.
The messages are not only when lauching zim, but whenever I switch pages.
Furthermore, in my case thes errror messages only occur,
when zim is running on a different machine than the X server.

Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/zim/gui/pageindex.py", line 748, in on_open_page
    self.treeview.select_page(path, vivificate=True)
  File "/usr/lib/python2.6/dist-packages/zim/gui/pageindex.py", line 660, in select_page
    rowreference = gtk.TreeRowReference(model, treepath)
RuntimeError: could not create GtkTreeRowReference object
Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/zim/plugins/tags.py", line 803, in on_open_page
    self.treeview.select_page(path)
  File "/usr/lib/python2.6/dist-packages/zim/gui/pageindex.py", line 672, in select_page
    model.select_page(path) # highlight in model
  File "/usr/lib/python2.6/dist-packages/zim/plugins/tags.py", line 56, in select_page
    treeiter = self.get_iter(treepath)
ValueError: invalid tree path