I currently have problems getting the metadata of books without filled in isbn. For all books I get no results. Below you will find an example of the log file for Glashard of Corine Hartman (I bought it from Bol.com

). For some reason the BOL_NL url is wrong.
calibre, version 2.17.0
FOUT: Geen zoekresultaten gevonden: <p>Geen boeken gevonden voor de zoekopdracht. Probeer de zoekopdracht <b>minder specifiek</b> te maken. Gebruik bijvoorbeeld alleen de achternaam van de auteur of één enkel sleutelwoord uit de titel. Om alle meldingen te zien klikt u op ‘Details tonen’.
Running identify query with parameters:
{u'authors': [u'Corine Hartman'], u'title': u'Glashard', u'timeout': 30, u'identifiers': {}}
Using plugins: BOL_NL
The log from individual plugins is below
****************************** BOL_NL ******************************
Request extra headers: [('User-agent', 'Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/532.5 (KHTML, like Gecko) Chrome/4.0.249.78 Safari/532.5')]
Found 0 results
Downloading from BOL_NL took 0.676000118256
Querying:
http://www.bol.com/nl/s/boeken/zoekr...equestid=17572
BOL_NL url: '/nl/p/glashard/9200000011255021/'
Failed to make details query: '/nl/p/glashard/9200000011255021/'
Traceback (most recent call last):
File "calibre_plugins.BOL_NL.worker", line 62, in get_details
File "site-packages\mechanize-0.2.5-py2.7.egg\mechanize\_mechanize.py", line 199, in open_novisit
File "site-packages\mechanize-0.2.5-py2.7.egg\mechanize\_mechanize.py", line 216, in _mech_open
BrowserStateError: can't fetch relative reference: not viewing any document
************************************************** ******************************
The identify phase took 0.81 seconds
The longest time (0.676000) was taken by: BOL_NL
Merging results from different sources and finding earliest publication dates from the worldcat.org service
We have 0 merged results, merging took: 0.00 seconds