hgview #6713 failed to add tag [rejected]

When trying to add a tag, the GUI doesn't do anything, and I get the following on the prompt

ADD TAG (0,) <gtk.TreeViewColumn object at 0x1949d70 (GtkTreeViewColumn at 0x19eacc0)>
Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/hgview/gtk/hgview_gtk.py", line 129, in revpopup_add_tag
    self.repo.add_tag( 2, "toto" )
  File "/usr/lib/python2.5/site-packages/hgview/hgrepo.py", line 322, in add_tag
    local=True, user=None, date=None )
  File "/var/lib/python-support/python2.5/mercurial/commands.py", line 2663, in tag
    if opts['rev'] and opts['remove']:
KeyError: 'remove'

in hgview 0.9.1-1