beets backtrace and config

backtrace.py

Traceback (most recent call last):
  File "/home/wasa/tmp/beets/bin/beet", line 9, in <module>
    load_entry_point('beets==1.3.2', 'console_scripts', 'beet')()
  File "/home/wasa/tmp/beets/lib/python2.7/site-packages/beets-1.3.2-py2.7.egg/beets/ui/__init__.py", line 810, in main
    _raw_main(args)
  File "/home/wasa/tmp/beets/lib/python2.7/site-packages/beets-1.3.2-py2.7.egg/beets/ui/__init__.py", line 802, in _raw_main
    subcommand.func(lib, suboptions, subargs)
  File "/home/wasa/tmp/beets/lib/python2.7/site-packages/beets-1.3.2-py2.7.egg/beets/ui/commands.py", line 845, in import_func
    import_files(lib, paths, query)
  File "/home/wasa/tmp/beets/lib/python2.7/site-packages/beets-1.3.2-py2.7.egg/beets/ui/commands.py", line 783, in import_files
    session.run()
  File "/home/wasa/tmp/beets/lib/python2.7/site-packages/beets-1.3.2-py2.7.egg/beets/importer.py", line 343, in run
    pl.run_sequential()
  File "/home/wasa/tmp/beets/lib/python2.7/site-packages/beets-1.3.2-py2.7.egg/beets/util/pipeline.py", line 330, in run_sequential
    out = coro.send(msg)
  File "/home/wasa/tmp/beets/lib/python2.7/site-packages/beets-1.3.2-py2.7.egg/beets/importer.py", line 875, in manipulate_files
    item.store()
  File "/home/wasa/tmp/beets/lib/python2.7/site-packages/beets-1.3.2-py2.7.egg/beets/library.py", line 378, in store
    self._check_db()
  File "/home/wasa/tmp/beets/lib/python2.7/site-packages/beets-1.3.2-py2.7.egg/beets/library.py", line 373, in _check_db
    raise ValueError('{0} has no id'.format(type(self).__name__))
ValueError: Item has no id

config.yaml

directory:      ~/tmp/beets/music/DONE
library:        ~/tmp/beets/library.blb
plugins:        discogs replaygain scrub zero
original_date:  yes
threaded:       no
paths:
    default:    $albumartist - $album ($year)/$track - $title
    comp:       $albumartist - $album ($year)/$track - $artist - $title
    singleton:  Singletons/$artist - $title
import:
    detail:     yes
    timid:      yes
    move:       yes
replaygain:
    overwrite:  yes
    albumgain:  yes
zero:
    fields:     id album_id artist_sort artist_credit albumartist_sort albumartist_credit grouping month day lyrics comments bpm comp mb_trackid mb_albumid mb_artistid mb_albumartistid albumtype label acoustid_fingerprint acoustid_id mb_releasegroupid asin catalognum script language country albumstatus media albumdisambig disctitle encoder original_year original_month original_day length bitrate format samplerate bitdepth channels