abrt 1.0.7 detected a crash.

architecture: i686
cmdline: /usr/bin/python /usr/bin/hgtk clone
comment: The cloning works well, but the application crashes after you close the dialog box.
component: tortoisehg
executable: /usr/bin/hgtk
kernel: 2.6.32.9-67.fc12.i686.PAE
package: tortoisehg-0.9.3-1.fc12
reason: posixpath.py:52:isabs:AttributeError: 'NoneType' object has no attribute 'startswith'
release: Fedora release 12 (Constantine)

backtrace
-----
posixpath.py:52:isabs:AttributeError: 'NoneType' object has no attribute 'startswith'

Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/tortoisehg/hgtk/gtklib.py", line 696, in __call__
    self.f(*args)  # ignore return value of f
  File "/usr/lib/python2.6/site-packages/tortoisehg/hgtk/hgcmd.py", line 519, in call_callback
    callback(returncode, self.useraborted, *args, **kargs)
  File "/usr/lib/python2.6/site-packages/tortoisehg/hgtk/clone.py", line 328, in cmd_done
    shlib.shell_notify([dest])
  File "/usr/lib/python2.6/site-packages/tortoisehg/util/shlib.py", line 140, in shell_notify
    f_notify.write('\n'.join([os.path.abspath(path) for path in paths]))
  File "/usr/lib/python2.6/posixpath.py", line 336, in abspath
    if not isabs(path):
  File "/usr/lib/python2.6/posixpath.py", line 52, in isabs
    return s.startswith('/')
AttributeError: 'NoneType' object has no attribute 'startswith'

Local variables in innermost frame:
s: None

How to reproduce
-----
1. Clone a mercurial repository hosted over http