Error in Select worksheet to add.
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File "/usr/lib/python2.7/dist-packages/zope/publisher/publish.py", line 132, in publish
result = publication.callObject(request, obj)
File "/usr/lib/python2.7/dist-packages/zope/app/publication/zopepublication.py", line 207, in callObject
return mapply(ob, request.getPositionalArguments(), request)
File "/usr/lib/python2.7/dist-packages/zope/publisher/publish.py", line 107, in mapply
return debug_call(obj, args)
Extra information: <schooltool.skin.flourish.zcml_content.FlourishCourseWorksheetsView_deployed_worksheets.html object at 0xad64eec>
File "/usr/lib/python2.7/dist-packages/zope/publisher/publish.py", line 113, in debug_call
return obj(*args)
File "/usr/lib/python2.7/dist-packages/schooltool/skin/flourish/page.py", line 96, in __call__
self.update()
File "/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/course_worksheets.py", line 347, in update
self.deploy(self.course, term, template)
File "/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/course_worksheets.py", line 267, in deploy
copyActivities(removeSecurityProxy(template), deployedWorksheet)
File "/usr/lib/python2.7/dist-packages/schooltool/gradebook/browser/report_card.py", line 86, in copyActivities
for category, weight in sourceWorksheet.getCategoryWeights().items():
