Comment 2 for bug 1548458

./fb2/204774.fb2
Traceback (most recent call last):
  File "/usr/local/lib/calibre/calibre/db/cache.py", line 1266, in set_metadata
    self._set_cover({book_id: cdata})
  File "/usr/local/lib/calibre/calibre/db/cache.py", line 1192, in set_cover
    self.backend.set_cover(book_id, path, data)
  File "/usr/local/lib/calibre/calibre/db/backend.py", line 1380, in set_cover
    save_cover_data_to(data, path)
  File "/usr/local/lib/calibre/calibre/utils/magick/draw.py", line 71, in save_cover_data_to
    img = _data_to_image(data)
  File "/usr/local/lib/calibre/calibre/utils/magick/draw.py", line 20, in _data_to_image
    img.load(data)
  File "/usr/local/lib/calibre/calibre/utils/magick/__init__.py", line 135, in load
    return _magick.Image.load(self, data)
Exception: unable to open file `/tmp/magick-92446KTBi4But8XD9': No such file or directory @ error/constitute.c/ReadImage/540