Comment 0 for bug 1239210

OS : Windows 8 64 bits
Calibre : 1.6 64 bits

I'm French, not sure my english is enough good. Hoping you'll understand me ;)

Steps:
Working an a library [A] containing about 13700 epub, I try to go to another one [B] containing about 4800 epub.
Clicking on the name of the library I want to go in, I get a crash describe below.
The crash window open again and again.
I have to kill the calibre process with task manager.
When I launch again Calibre it starts with the library I wanted to go [B] (4800 epubs).

Information:
Previous versions of Calibre (64bits) worked well with same library, same numbers of books.

Crash log:
calibre, version 1.6.0
ERREUR : Exception non gérée: <b>IndexError</b>:tuple index out of range

calibre 1.6 [64bit] isfrozen: True is64bit: True
Windows-8-6.2.9200 Windows ('64bit', 'WindowsPE')
('Windows', '8', '6.2.9200')
Python 2.7.5
Windows: ('8', '6.2.9200', '', 'Multiprocessor Free')
Traceback (most recent call last):
  File "site-packages\calibre\gui2\library\views.py", line 67, in paintSection
  File "site-packages\calibre\gui2\library\models.py", line 930, in headerData
  File "site-packages\calibre\db\view.py", line 190, in index_to_id
IndexError: tuple index out of range