diff --git a/frappe/__init__.py b/frappe/__init__.py
index 5453ab248c..fa62f3b405 100644
--- a/frappe/__init__.py
+++ b/frappe/__init__.py
@@ -410,8 +410,8 @@ def get_module_list(app_name):
 def get_all_apps(with_frappe=False, with_internal_apps=True, sites_path=None):
 	if not sites_path:
 		sites_path = local.sites_path
-
-	apps = get_file_items(os.path.join(sites_path, "apps.txt"))
+	
+	apps = get_file_items(os.path.join(sites_path, "apps.txt"), raise_not_found=True)
 	if with_internal_apps:
 		apps.extend(get_file_items(os.path.join(local.site_path, "apps.txt")))
 	if with_frappe:
@@ -465,8 +465,8 @@ def setup_module_map():
 			_cache.set_value("app_modules", local.app_modules)
 			_cache.set_value("module_app", local.module_app)
 		
-def get_file_items(path):
-	content = read_file(path)
+def get_file_items(path, raise_not_found=False):
+	content = read_file(path, raise_not_found=raise_not_found)
 	if content:
 		return [p.strip() for p in content.splitlines() if p.strip() and not p.startswith("#")]
 	else: 
@@ -476,10 +476,12 @@ def get_file_json(path):
 	with open(path, 'r') as f:
 		return json.load(f)
 
-def read_file(path):
+def read_file(path, raise_not_found=False):
 	if os.path.exists(path):
 		with open(path, "r") as f: 
 			return unicode(f.read(), encoding="utf-8")
+	elif raise_not_found:
+		raise IOError("{} Not Found".format(path))
 	else:
 		return None
 
diff --git a/frappe/cli.py b/frappe/cli.py
index 0995bcbf46..0f8b39e187 100755
--- a/frappe/cli.py
+++ b/frappe/cli.py
@@ -255,7 +255,7 @@ def install(db_name, root_login="root", root_password=None, source_sql=None,
 	install_db(root_login=root_login, root_password=root_password, db_name=db_name, source_sql=source_sql,
 		admin_password = admin_password, verbose=verbose, force=force, site_config=site_config, reinstall=reinstall)
 	make_site_dirs()
-	install_app("frappe", verbose=verbose)
+	install_app("frappe", verbose=verbose, set_as_patched=not source_sql)
 	frappe.destroy()
 
 @cmd
diff --git a/frappe/installer.py b/frappe/installer.py
index 2224443253..ed5c921799 100755
--- a/frappe/installer.py
+++ b/frappe/installer.py
@@ -83,7 +83,7 @@ def make_connection(root_login, root_password):
 	return frappe.database.Database(user=root_login, password=root_password)
 
 @frappe.whitelist()
-def install_app(name, verbose=False):
+def install_app(name, verbose=False, set_as_patched=True):
 	frappe.flags.in_install_app = name
 	frappe.clear_cache()
 
@@ -104,11 +104,12 @@ def install_app(name, verbose=False):
 	sync_for(name, force=True, sync_everything=True, verbose=verbose)
 
 	add_to_installed_apps(name)
-	set_all_patches_as_completed(name)
+	
+	if set_as_patched:
+		set_all_patches_as_completed(name)
 
 	for after_install in app_hooks.after_install or []:
 		frappe.get_attr(after_install)()
-
 		
 	frappe.flags.in_install_app = False
 	
diff --git a/frappe/patches.txt b/frappe/patches.txt
index 881d8aeca9..57e2485f60 100644
--- a/frappe/patches.txt
+++ b/frappe/patches.txt
@@ -19,4 +19,5 @@ frappe.patches.4_0.rename_sitemap_to_route
 frappe.patches.4_0.set_website_route_idx
 execute:import frappe.installer;frappe.installer.make_site_dirs() #2014-02-19
 frappe.patches.4_0.private_backups
-frappe.patches.4_0.set_module_in_report
\ No newline at end of file
+frappe.patches.4_0.set_module_in_report
+frappe.patches.4_0.remove_old_parent
\ No newline at end of file
diff --git a/frappe/patches/4_0/remove_old_parent.py b/frappe/patches/4_0/remove_old_parent.py
new file mode 100644
index 0000000000..7c738f43f4
--- /dev/null
+++ b/frappe/patches/4_0/remove_old_parent.py
@@ -0,0 +1,9 @@
+# Copyright (c) 2013, Web Notes Technologies Pvt. Ltd. and Contributors
+# MIT License. See license.txt
+
+from __future__ import unicode_literals
+import frappe
+
+def execute():
+	for doctype in frappe.db.sql_list("""select name from `tabDocType` where istable=1"""):
+		frappe.db.sql("""delete from `tab{0}` where parent like "old_par%:%" """.format(doctype))