Also handle ValueError on Django 1.3.x as it doesn't raise the InvalidCacheBackendError correctly.
Also handle ValueError on Django 1.3.x as it doesn't raise the InvalidCacheBackendError correctly.

blag/django-cache-machine,optixx/django-cache-machine,django-cache-machine/django-cache-machine,ebrelsford/django-cache-machine,janusnic/django-cache-machine,tobiasmcnulty/django-cache-machine,DramaFever/django-cache-machine