edit book can't open book

[jemkeith]

I have gotten the following error on several books when I try to edit them. If i open the book in sigil, then save it, I can edit it then.

calibre, version 1.16.0
ERROR: Unhandled exception: <b>IndexError</b>:list index out of range

calibre 1.16 Portable isfrozen: True is64bit: False
Windows-7-6.1.7601-SP1 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '7', '6.1.7601')
Python 2.7.5
Windows: ('7', '6.1.7601', 'SP1', 'Multiprocessor Free')
Traceback (most recent call last):
  File "site-packages\calibre\gui2\__init__.py", line 393, in dispatch
  File "site-packages\calibre\gui2\tweak_book\job.py", line 84, in job_done
  File "site-packages\calibre\gui2\tweak_book\boss.py", line 212, in book_opened
  File "site-packages\calibre\ebooks\oeb\polish\container.py", line 471, in mi
  File "site-packages\calibre\ebooks\oeb\polish\container.py", line 718, in serialize_item
  File "site-packages\calibre\ebooks\oeb\polish\container.py", line 695, in format_opf
IndexError: list index out of range

[kovidgoyal]

That error indicates the opf file in the book is missing the <metadata> tag, I will have edit book ignore that in the future.

[jemkeith]

Awesome!!!
Thank you!!!
The book editor is a great tool!