Django 1.4: Why is my context processor not working?

I recently upgraded a project from Django 1.3 to 1.4, and that seems to have broken my context processor.

In myapp/myapp/processors.py:

def currentPath(request):
    return {'current_path': request.get_full_path()}

In myapp/myapp/settings.py:

from django.conf import global_settings

global_settings.TEMPLATE_CONTEXT_PROCESSORS += (
    'myapp.processors.currentPath',
    'django.core.context_processors.request',
)

In any template, {{ current_path }} is expected -- and did, until the upgrade, return the current path. Now, it is not getting processed at all. I'm absolutely stuck here.