Traceback (most recent call last):
  File "/usr/bin/quodlibet", line 304, in <module>
    main()
  File "/usr/bin/quodlibet", line 33, in main
    library = load_library()
  File "/usr/bin/quodlibet", line 258, in load_library
    lib = library.init(const.LIBRARY)
  File "/usr/share/quodlibet/library/__init__.py", line 38, in init
    library.load(cache_fn, skip=formats.supported)
  File "/usr/share/quodlibet/library/_library.py", line 124, in load
    try: items = pickle.load(fileobj)
UnicodeDecodeError: 'utf8' codec can't decode bytes in position 28-31: illegal encoding