ivan@ubuntu-704:~$ deluge
no existing Deluge session
deluge_core; using libtorrent 0.11.0.0. Compiled with NDEBUG value: 1
Applying preferences
Raising error: 
Error: ''
Traceback (most recent call last):
  File "/usr/local/bin/deluge", line 87, in <module>
    interface = deluge.interface.DelugeGTK()
  File "/usr/local/lib/python2.6/site-packages/deluge/interface.py", line 95, in __init__
    '%s %s'%(common.PROGRAM_NAME, common.PROGRAM_VERSION), common.CONFIG_DIR)
  File "/usr/local/lib/python2.6/site-packages/deluge/core.py", line 237, in __init__
    self.sync()
  File "/usr/local/lib/python2.6/site-packages/deluge/core.py", line 655, in sync
    raise e
deluge.core.InvalidEncodingError: ''
ivan@ubuntu-704:~$