Meta data not fetched from Edelweiss

[blaubach]

Since a few weeks I'm unable to retrieve any meta data from Edelweiss.
Amazon anf goodreads work just fine.

I'm getting following log:

calibre, version 1.20.0
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.

Running identify query with parameters: 
{u'authors': [u'Amy Kathleen Ryan'], u'identifiers': {u'isbn': u'9780312621360'}, u'timeout': 30, u'title': u'Flame: A Sky Chasers Novel'} 
Using plugins: Edelweiss 
The log from individual plugins is below 

****************************** Edelweiss ****************************** 
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 Edelweiss took 5.10291409492 
Using query URL: http://edelweiss.abovethetreeline.com/CatalogOverview.aspx?group=search&searchCatalogID=&searchType=1&section=CatalogOverview&searchOrgID=&searchMailingID=&searchSelect=1&keywords=9780312621360
Using query URL: http://edelweiss.abovethetreeline.com/CatalogOverview.aspx?group=search&searchCatalogID=&searchType=1&section=CatalogOverview&searchOrgID=&searchMailingID=&searchSelect=1&keywords=Flame+Sky+Chasers+Novel+Amy+Kathleen+Ryan 

******************************************************************************** 
The identify phase took 5.13 seconds 
The longest time (5.102914) was taken by: Edelweiss 
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

I checked, the book is in Edelweiss's database and I can search for the ISBN on the site directly.

So what is the problem?

[kovidgoyal]

https://github.com/kovidgoyal/calibr...34e419c0ddb68e

[ymmv]

Is it possible to do a check on the results provided by Edelweiss? I get quite a number of false positives from the site which results in ebooks getting completely wrong covers.

[kovidgoyal]

Use single metadata download, that allows you to review results.