Conversion Error - pdf to epub

[Quint]

Hi,
Can anyone decipher the cause of this. I'm converting a pdf to epub:

ERROR: Conversion Error: <b>Failed</b>: Convert book 1 of 1 (Papadakis 2007 - Pairs and Earnings)
...

Retrieving document metadata...
Generating manifest...
Rendering manifest...
Parsing all content...
Parsing index.html ...
Failed to parse content in index.html
Traceback (most recent call last):
File "site-packages\calibre\ebooks\oeb\reader.py", line 159, in _manifest_prune_invalid
File "site-packages\calibre\ebooks\oeb\base.py", line 1060, in fget
File "site-packages\calibre\ebooks\oeb\base.py", line 789, in _parse_xhtml
File "site-packages\calibre\ebooks\conversion\preprocess.py", line 431, in __call__
File "site-packages\calibre\ebooks\conversion\preprocess.py", line 152, in __call__
File "site-packages\calibre\ebooks\conversion\preprocess.py", line 133, in dehyphenate
File "re.py", line 190, in compile
File "re.py", line 245, in _compile
error: unbalanced parenthesis

Spine item 'id1' not found
Python function terminated unexpectedly
Spine is empty (Error Code: 1)
Traceback (most recent call last):
File "site.py", line 103, in main
File "site.py", line 85, in run_entry_point
File "site-packages\calibre\utils\ipc\worker.py", line 99, in main
File "site-packages\calibre\gui2\convert\gui_conversion.py", line 24, in gui_convert
File "site-packages\calibre\ebooks\conversion\plumber.py", line 841, in run
File "site-packages\calibre\ebooks\conversion\plumber.py", line 968, in create_oebbook
File "site-packages\calibre\ebooks\oeb\reader.py", line 72, in __call__
File "site-packages\calibre\ebooks\oeb\reader.py", line 594, in _all_from_opf
File "site-packages\calibre\ebooks\oeb\reader.py", line 289, in _spine_from_opf
calibre.ebooks.oeb.base.OEBError: Spine is empty

Many thanks.

[ldolse]

There's a bug in the new function to remove hyphens - I suspect it's because your document has actual parenthesized words with hyphens in the middle on a line break. Neglected to consider that particular case in the new code. Can you open a bug with your file to verify for certain and use as a test?

bugs.calibre-ebook.com

[ldolse]

I've created a test case to reproduce this, so a fix should be in the next release, but it would still be good to submit a bug with your pdf just in case I'm mis-interpreting the error.

[Quint]

Many thanks ldolse, I've created bug ticket #6974 with the pdf and error attached:

http://bugs.calibre-ebook.com/ticket/6974