Django 1.7 - DisallowedModelAdminToField

admin.py

class VideoRelGenericInline(generic.GenericTabularInline):
    model = VideoRel
    raw_id_fields = ('video',)
 
 
class AnotherModelAdmin(admin.ModelAdmin):
    inlines = (VideoRelGenericInline,)
 
 
admin.site.register(AnotherModel, AnotherModelAdmin)

error.txt

The exception happens when clicking on the raw_id_fields magnifying glass in the admin, the popup will show the exception.

models.py

class Video(models.Model):
    youtube_code = models.CharField(max_length=11)
    

class VideoRel(models.Model):
    video = models.ForeignKey('Video')
    content_type = models.ForeignKey(ContentType)
    object_id = models.PositiveIntegerField(verbose_name=u'ID объекта')
    content_object = generic.GenericForeignKey()


class AnotherModel(models.Model):
    videos = generic.GenericRelation('VideoRel')