I installed last Cuckoo version on my physical machine Ubuntu 15.10 and I configured cuckoo following official guide.
I have problem with web gui:
TemplateDoesNotExist at /
and it tries to search dashboard template in 
usr/lib/python2.7/dist-packages/django/contrib/auth/templates/dashboard/index.html (with File does not exist error)
instead of to search it in ~/cuckoo/web/templates/dashboard/
I tried to search a solution in cuckoo official support but it seems to be deserted.
Do you have TEMPLATE_DIR and TEMPLATE_LOADERS in your settings.py file. I faced the same issues too. Once you do this, it will work.
Cuckoo Error: TemplateDoesNotExist at /