$ btmakemetafile.py http://tracker.site.tld/tracker/private_key/announce webdesign/
Traceback (most recent call last):
  File "/usr/local/bin/btmakemetafile.py", line 38, in ?
    make_meta_file(file, args[0], config, progress = prog)
  File "/usr/local/lib/python2.4/site-packages/BitTornado/BT1/makemetafile.py", line 102, in make_meta_file
    info = makeinfo(file, piece_length, encoding, flag, progress, progress_percent)
  File "/usr/local/lib/python2.4/site-packages/BitTornado/BT1/makemetafile.py", line 170, in makeinfo
    fs.append({'length': size, 'path': uniconvertl(p, encoding)})
  File "/usr/local/lib/python2.4/site-packages/BitTornado/BT1/makemetafile.py", line 143, in uniconvertl
    raise UnicodeError('bad filename: '+join(l))
TypeError: cannot concatenate 'str' and 'list' objects