Traceback (most recent call last):
  File "/opt/syncevolution/syncfe.py", line 884, in sync_clicked
    self.synchronize_start()
  File "/opt/syncevolution/syncfe.py", line 1253, in synchronize_start
    self.sync_state = SyncRunner(False, self.sync, self.server, self.server_dir, self.server_config, mode, sources)
  File "/opt/syncevolution/syncfe.py", line 99, in __init__
    self.method = get_method(url)
  File "/opt/syncevolution/syncfe.py", line 76, in get_method
    pos = url.find(":")
AttributeError: 'NoneType' object has no attribute 'find'