fallback_pre_save() takes exactly 5 arguments (3 given)

[karesh]

When I drag I got this error.
response = receiver(signal=self, sender=sender, **named)
TypeError: fallback_pre_save() takes exactly 5 arguments (3 given)

class MyModel(models.Model):

    class Meta:
        ordering = ('order', )

    image = models.ImageField('Front images', upload_to=upload_images)
    description = models.CharField(max_length=200)
    order = models.PositiveSmallIntegerField(default=0)

class MyModelAdmin(SortableAdminMixin, admin.ModelAdmin):
    list_display = ('id', 'image', 'description', )

admin.site.register(MyModel, MyModelAdmin)

[jrief]

which version of Django?