I'm having a similar issue with versions after 0.8.0. Cannot download any metadata using just Amazon and/or Google. The most recent log is tagged below, though note that I get similar errors with every book I try.
One thought is that I might be having an issue because I must use a proxy server, but a look in Terminal shows that calibre recognizes that fact and has the proxy set correctly.
Here's the log:
calibre, version 0.8.6
ERROR: No matches found: <p>Failed to find any books that match your search. Try making the search <b>less specific</b>. For example, use only the author's last name and a single distinctive word from the title.<p>To see the full log, click Show Details.
Starting download
Query: title:Walden; authors:Henry David Thoreau; isbn:9781613820162
Running identify query with parameters:
{u'authors': [u'Henry David Thoreau'], u'identifiers': {u'isbn': u'9781613820162'}, u'timeout': 30, u'title': u'Walden'}
Using plugins: Google, Amazon.com
The log from individual plugins is below
****************************** Google ******************************
Request extra headers: [('User-agent', 'Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1')]
Found 0 results
Downloading from Google took 180.11074996
Failed to make identify query: u'http://books.google.com/books/feeds/volumes?q=isbn%3A9781613820162&max-results=20&min-viewability=none&start-index=1'
Traceback (most recent call last):
File "site-packages/calibre/ebooks/metadata/sources/google.py", line 296, in identify
File "site-packages/mechanize/_mechanize.py", line 199, in open_novisit
File "site-packages/mechanize/_mechanize.py", line 230, in _mech_open
File "site-packages/mechanize/_opener.py", line 193, in open
File "site-packages/mechanize/_urllib2_fork.py", line 344, in _open
File "site-packages/mechanize/_urllib2_fork.py", line 332, in _call_chain
File "site-packages/mechanize/_urllib2_fork.py", line 1142, in http_open
File "site-packages/mechanize/_urllib2_fork.py", line 1118, in do_open
URLError: <urlopen error timed out>
************************************************** ******************************
****************************** Amazon.com ******************************
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 Amazon.com took 30.2416381836
Amazon timed out. Try again later.
************************************************** ******************************
The identify phase took 180.12 seconds
The longest time (180.110750) was taken by: Google
Merging results from different sources and finding earliest publication dates
We have 0 merged results, merging took: 0.00 seconds