我撕我的头发了，试图找出为什么我的自定义用户配置文件视图不再工作。我正在使用django-allauth，并通过创建一个与用户一对一字段的模型来定制我的用户配置文件。然而，我的观点是抛出错误：

OperationalError at /profile/

no such table: user_profile

Request Method:     GET
Request URL:    http://localhost:8000/profile/
Django Version:     1.7.4
Exception Type:     OperationalError
Exception Value:    

no such table: user_profile

Exception Location:     /usr/local/lib/python2.7/dist-packages/django/db/backends/sqlite3/base.py in execute, line 485
Python Executable:  /usr/bin/python
Python Version:     2.7.6

我的models.py与自定义用户配置文件看起来像这样：

from django.contrib.auth.models import User
from django.db.models.signals import post_save
from django.db import models
from allauth.account.models import EmailAddress

class UserProfile(models.Model):
    user = models.OneToOneField(User, related_name='profile')

    # user visible settings
    stop_reminders = models.BooleanField ( default=False,
                             help_text = 'Flag if user wants reminders not to be sent.' )

    stop_all_email = models.BooleanField ( default=False,
                             help_text = 'Flag if user wants no email to be sent.' )

    # hidden settings
    is_premium =  models.BooleanField ( default=False,
                             help_text = 'Flag if user has the premium service.' )

    def __unicode__(self):
        return "{}'s profile".format(self.user.username)

    class Meta:
        db_table = 'user_profile'

    def account_verified(self):
        if self.user.is_authenticated:
            result = EmailAddress.objects.filter(email=self.user.email)
            if len(result):
                return result[0].verified
        return False

#User.profile = property(lambda u: UserProfile.objects.get_or_create(user=u)[0])

def create_user_profile(sender, instance, created, **kwargs):
    if created:
       profile, created = UserProfile.objects.get_or_create(user=instance)

post_save.connect(create_user_profile, sender=User)

我的视图，这是一个设置用户配置文件设置的地方，看起来像这样：

@login_required
def user_settings (request):
    """
    User settings view, handles changing of user settings and
    entry distribution (eventually)
    """

    if request.method == 'POST': # If the form has been submitted...

        form = UserProfileForm(request.POST, instance=request.user.profile) # A form bound to the POST data

        if form.is_valid(): # All validation rules pass
            form.save ()

            return render_to_response('sm/profile_update_success.html',
                                      {},
                                      context_instance=RequestContext(request))

    else:
        # create unbound form with initial values generated
        # from the user's profile
        form = UserProfileForm (instance=request.user.profile)

    return render ( request, 'profile.html', { 'form': form, } )

直到最近，这是工作正常，我不知道是什么改变了，使它停止。有人能解释一下吗？
我使用的是Django-1.7.4和django-allauth-0.19.1。对于调试，我使用了sqllite，我已经尝试使用python manage.py migrate和python manage.py syncdb创建了它。