No Data and Python Error

Great tool, but spontaneously produced 'no data' message on website after months of no problems.  I generated new zotero key then got the python error (below). No idea how to resolve so any suggestions are appreciated.  thanks.

Paul


Zotero

Choose the page you would like to use, copy the URL, and then follow the instructions on the Help page to set it up on your personal page.
BibBase page of entire library (which is using this bibtex file)
Collections

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<type 'exceptions.KeyError'> Python 2.7.5+: /usr/bin/python2.7
Mon Mar 30 14:38:29 2015

A problem occurred in a Python script. Here is the sequence of function calls leading up to the error, in the order they occurred.

/home/ubuntu/bibbase/cgi-bin/zotero/get.py in ()
153 pickle.dump(data, open(DIR+'keys/'+username, 'w'))
154
=> 155 respond(apiKey, userID, username)
156
157 elif fields.has_key("username"):
respond = <function respond>, apiKey = u'G9gCuD5oY0brNg0RH456LRwM', userID = u'1975743', username = u'IonSense'

/home/ubuntu/bibbase/cgi-bin/zotero/get.py in respond(apiKey=u'G9gCuD5oY0brNg0RH456LRwM', userID=u'1975743', username=u'IonSense')
91 for col in cols:
92 # print col.name, col.collectionKey
=> 93 baseurl = "https://api.zotero.org/users/"+userID+"/collections/"+col['collectionKey']+"/items?key="+apiKey+"&format=bibtex&limit=100"
94 baseurl = urllib.quote_plus(baseurl);
95 print "

BibBase">http://bibbase.org/show?bib="+baseurl+"&msg=embed\">BibBase page: ", col['name'].encode('ascii', 'xmlcharrefreplace'), "

"
baseurl = u'http://bibbase.org/zotero/IonSense', userID = u'1975743', col = {u'group_id': u'1975743', u'key': u'DP88T8GJ', u'name': u'DART MS', u'parentCollection': False, u'relations': {}, u'updated': 'Thu, 26 Feb 2015 14:49:31 UTC', u'version': 125}, apiKey = u'G9gCuD5oY0brNg0RH456LRwM'

<type 'exceptions.KeyError'>: 'collectionKey'
args = ('collectionKey',)
message = 'collectionKey'