table lebron_entry has no column named slug - django

Question

I am new to django .I have been following the book Practical Django Projects for learning it.
I am creating a weblog as mentioned in the book. I have followed all the steps for writing the Entry model. When the try to add an entry from the admin interface I get the error
DatabaseError at /adminlebron/entry/add/
table lebron_entry has no column named slug
After searching for a bit I found that I ran syncdb before creating the model fully and from the django documentation I found that Syncdb will not alter existing tables . After that I found South( http://south.aeracode.org/ ) and I tried using it , but i am still getting the same error.
This is my Entry Model
class Entry(models.Model):
STATUS_CHOICES = (
(1,'Live'),
(2,'Draft'),
)
title = models.CharField(max_length=250)
excerpt = models.TextField(blank=True)
body = models.TextField()
pub_date = models.DateTimeField(default=datetime.datetime.now)
slug = models.SlugField(help_text="Slug")
author = models.ForeignKey(User)
enable_comments = models.BooleanField(default=True)
featured = models.BooleanField(default=False)
status = models.IntegerField(choices=STATUS_CHOICES,default=1)
categories = models.ManyToManyField(Category)
tags = TagField()
excerpt_html = models.TextField(editable=False,blank=True)
body_html = models.TextField(editable=False,blank=True)
def save(self):
self.body_html = markdown(self.body)
if self.excerpt:
self.excerpt_html = markdown(self.excerpt)
super(Entry,self).save()
class Meta:
verbose_name_plural = "Entries"
ordering = ['-pub_date']
class Admin:
pass
def __unicode__(self):
return self.title
def get_absolute_url(self):
return "/weblog/%s/%s/" % (self.pub_date.strftime("%Y/%b/%d").lower(),self.slug)
This is the output of sqlall
BEGIN;
CREATE TABLE "lebron_category" (
"id" integer NOT NULL PRIMARY KEY,
"title" varchar(250) NOT NULL,
"slug" varchar(50) NOT NULL UNIQUE,
"description" text NOT NULL
)
;
CREATE TABLE "lebron_entry_categories" (
"id" integer NOT NULL PRIMARY KEY,
"entry_id" integer NOT NULL,
"category_id" integer NOT NULL REFERENCES "lebron_category" ("id")
UNIQUE ("entry_id", "category_id")
)
;
CREATE TABLE "lebron_entry" (
"id" integer NOT NULL PRIMARY KEY,
"title" varchar(250) NOT NULL,
"excerpt" text NOT NULL,
"body" text NOT NULL,
"pub_date" datetime NOT NULL,
"slug" varchar(50) NOT NULL,
"author_id" integer NOT NULL REFERENCES "auth_user" ("id"),
"enable_comments" bool NOT NULL,
"featured" bool NOT NULL,
"status" integer NOT NULL,
"tags" varchar(255) NOT NULL,
"excerpt_html" text NOT NULL,
"body_html" text NOT NULL
)
;
CREATE INDEX "lebron_entry_56ae2a2a" ON "lebron_entry" ("slug");
CREATE INDEX "lebron_entry_337b96ff" ON "lebron_entry" ("author_id");
COMMIT;
It appears that the column slug is there in the table after all.
I don't want to recreate the db is there any other way to correct this? The name of my app is lebron