diff --git a/accounts/doctype/cost_center/cost_center.py b/accounts/doctype/cost_center/cost_center.py
index 8340a8b..e57b6a3 100644
--- a/accounts/doctype/cost_center/cost_center.py
+++ b/accounts/doctype/cost_center/cost_center.py
@@ -17,7 +17,7 @@
 from __future__ import unicode_literals
 import webnotes
 from webnotes.model.bean import getlist
-from webnotes import msgprint
+from webnotes import msgprint, _
 
 from webnotes.utils.nestedset import DocTypeNestedSet
 
@@ -37,6 +37,8 @@
 			
 		if self.doc.cost_center_name != 'Root' and not self.doc.parent_cost_center:
 			msgprint("Please enter parent cost center", raise_exception=1)
+		elif self.doc.cost_center_name == "Root" and self.doc.parent_cost_center:
+			msgprint(_("Root cannot have a parent cost center"), raise_exception=1)
 		
 	def convert_group_to_ledger(self):
 		if self.check_if_child_exists():
diff --git a/accounts/doctype/sales_invoice_item/sales_invoice_item.txt b/accounts/doctype/sales_invoice_item/sales_invoice_item.txt
index dee0e85..98962b5 100644
--- a/accounts/doctype/sales_invoice_item/sales_invoice_item.txt
+++ b/accounts/doctype/sales_invoice_item/sales_invoice_item.txt
@@ -1,8 +1,8 @@
 [
  {
-  "creation": "2013-03-26 11:03:08", 
+  "creation": "2013-03-29 18:21:58", 
   "docstatus": 0, 
-  "modified": "2013-03-28 15:42:14", 
+  "modified": "2013-03-29 19:32:32", 
   "modified_by": "Administrator", 
   "owner": "Administrator"
  }, 
@@ -223,7 +223,7 @@
   "fieldname": "cost_center", 
   "fieldtype": "Link", 
   "in_filter": 1, 
-  "label": "Sales Cost Center", 
+  "label": "Cost Center", 
   "oldfieldname": "cost_center", 
   "oldfieldtype": "Link", 
   "options": "Cost Center", 
diff --git a/patches/march_2013/p03_update_buying_amount.py b/patches/march_2013/p03_update_buying_amount.py
index e4a3fcb..0d96feb 100644
--- a/patches/march_2013/p03_update_buying_amount.py
+++ b/patches/march_2013/p03_update_buying_amount.py
@@ -2,6 +2,9 @@
 from webnotes.utils import now_datetime
 
 def execute():
+	webnotes.reload_doc("stock", "doctype", "delivery_note_item")
+	webnotes.reload_doc("accounts", "doctype", "sales_invoice_item")
+
 	webnotes.conn.auto_commit_on_many_writes = True
 	for company in webnotes.conn.sql("select name from `tabCompany`"):
 		print company[0]
diff --git a/patches/march_2013/p07_update_valuation_rate.py b/patches/march_2013/p07_update_valuation_rate.py
index 7d11e42..794baf3 100644
--- a/patches/march_2013/p07_update_valuation_rate.py
+++ b/patches/march_2013/p07_update_valuation_rate.py
@@ -1,6 +1,8 @@
 import webnotes
 
 def execute():
+	webnotes.reload_doc("accounts", "doctype", "purchase_invoice_item")
+	
 	for purchase_invoice in webnotes.conn.sql_list("""select distinct parent 
 		from `tabPurchase Invoice Item` pi_item where docstatus = 1 and ifnull(valuation_rate, 0)=0 
 		and exists(select name from `tabPurchase Invoice` where name = pi_item.parent)"""):
diff --git a/patches/march_2013/p08_create_aii_accounts.py b/patches/march_2013/p08_create_aii_accounts.py
index f6e1e2d..ec186b4 100644
--- a/patches/march_2013/p08_create_aii_accounts.py
+++ b/patches/march_2013/p08_create_aii_accounts.py
@@ -1,8 +1,15 @@
 import webnotes
 def execute():
+	webnotes.reload_doc("setup", "doctype", "company")
+	
 	add_group_accounts()
 	add_ledger_accounts()
 	add_aii_cost_center()
+	set_default_accounts()
+	
+def set_default_accounts():
+	for company in webnotes.conn.sql_list("select name from `tabCompany`"):
+		webnotes.get_obj("Company", company).set_default_accounts()
 	
 def _check(parent_account, company):
 	def _get_root(is_pl_account, debit_or_credit):
@@ -45,6 +52,14 @@
 	
 def add_accounts(accounts_to_add, check_fn=None):	
 	for company, abbr in webnotes.conn.sql("""select name, abbr from `tabCompany`"""):
+		count = webnotes.conn.sql("""select count(name) from `tabAccount`
+			where company=%s and ifnull(parent_account, '')=''""", company)[0][0]
+		
+		if count > 4:
+			print "Company", company, \
+				"has more than 4 root accounts. cannot apply patch to this company."
+			continue
+		
 		for account_name, parent_account_name, group_or_ledger, account_type in accounts_to_add:
 			if not webnotes.conn.exists("Account", "%s - %s" % (account_name, abbr)):
 				parent_account = "%s - %s" % (parent_account_name, abbr)
@@ -64,7 +79,11 @@
 	for company, abbr in webnotes.conn.sql("""select name, abbr from `tabCompany`"""):
 		if not webnotes.conn.exists("Cost Center", "Auto Inventory Accounting - %s" % abbr):
 			parent_cost_center = webnotes.conn.get_value("Cost Center", 
-				{"parent_cost_center['']": '', "company_name": company}, 'name')
+				{"parent_cost_center['']": '', "company_name": company})
+				
+			if not parent_cost_center:
+				print "Company", company, "does not have a root cost center"
+				continue
 			
 			cc = webnotes.bean({
 				"doctype": "Cost Center",
diff --git a/selling/doctype/sales_common/sales_common.py b/selling/doctype/sales_common/sales_common.py
index dde4919..b9f9af6 100644
--- a/selling/doctype/sales_common/sales_common.py
+++ b/selling/doctype/sales_common/sales_common.py
@@ -212,7 +212,8 @@
 	
 	# ***************** Get Ref rate as entered in Item Master ********************
 	def get_ref_rate(self, item_code, price_list_name, price_list_currency, plc_conv_rate):
-		ref_rate = webnotes.conn.sql("select ref_rate from `tabItem Price` where parent = %s and price_list_name = %s and ref_currency = %s", (item_code, price_list_name, price_list_currency))
+		ref_rate = webnotes.conn.sql("select ref_rate from `tabItem Price` where parent = %s and price_list_name = %s and ref_currency = %s and selling=1", 
+		(item_code, price_list_name, price_list_currency))
 		base_ref_rate = ref_rate and flt(ref_rate[0][0]) * flt(plc_conv_rate) or 0
 		return base_ref_rate
 
diff --git a/stock/doctype/item/item.py b/stock/doctype/item/item.py
index 802771c..b27d9f2 100644
--- a/stock/doctype/item/item.py
+++ b/stock/doctype/item/item.py
@@ -17,7 +17,7 @@
 from __future__ import unicode_literals
 import webnotes
 
-from webnotes.utils import cstr, flt
+from webnotes.utils import cstr, flt, cint
 from webnotes.model.doc import addchild
 from webnotes.model.bean import getlist
 from webnotes import msgprint, _
@@ -119,7 +119,7 @@
 	def check_ref_rate_detail(self):
 		check_list=[]
 		for d in getlist(self.doclist,'ref_rate_details'):
-			if [cstr(d.price_list_name),cstr(d.ref_currency)] in check_list:
+			if [cstr(d.price_list_name),cstr(d.ref_currency),cint(d.selling),cint(d.buying)] in check_list:
 				msgprint("Ref Rate is entered twice for Price List : '%s' and Currency : '%s'." % (d.price_list_name,d.ref_currency))
 				raise Exception
 			else:
diff --git a/stock/doctype/stock_entry/stock_entry.js b/stock/doctype/stock_entry/stock_entry.js
index 464fdb5..1f4aafa 100644
--- a/stock/doctype/stock_entry/stock_entry.js
+++ b/stock/doctype/stock_entry/stock_entry.js
@@ -360,7 +360,8 @@
 
 cur_frm.cscript.validate = function(doc, cdt, cdn) {
 	cur_frm.cscript.validate_items(doc);
-	validated = cur_frm.cscript.get_doctype_docname() ? true : false;
+	if($.inArray(cur_frm.doc.purpose, ["Purchase Return", "Sales Return"])!==-1)
+		validated = cur_frm.cscript.get_doctype_docname() ? true : false;
 }
 
 cur_frm.cscript.validate_items = function(doc) {
diff --git a/stock/doctype/stock_entry_detail/stock_entry_detail.txt b/stock/doctype/stock_entry_detail/stock_entry_detail.txt
index 2c59dd7..8426ddca 100644
--- a/stock/doctype/stock_entry_detail/stock_entry_detail.txt
+++ b/stock/doctype/stock_entry_detail/stock_entry_detail.txt
@@ -1,8 +1,8 @@
 [
  {
-  "creation": "2013-02-22 01:28:04", 
+  "creation": "2013-03-29 18:22:12", 
   "docstatus": 0, 
-  "modified": "2013-03-07 07:03:32", 
+  "modified": "2013-03-29 19:43:04", 
   "modified_by": "Administrator", 
   "owner": "Administrator"
  }, 
@@ -158,6 +158,7 @@
   "label": "Conversion Factor", 
   "oldfieldname": "conversion_factor", 
   "oldfieldtype": "Currency", 
+  "print_hide": 1, 
   "read_only": 1, 
   "reqd": 1
  }, 
@@ -168,6 +169,7 @@
   "label": "Qty as per Stock UOM", 
   "oldfieldname": "transfer_qty", 
   "oldfieldtype": "Currency", 
+  "print_hide": 1, 
   "read_only": 1, 
   "reqd": 1
  }, 
@@ -180,6 +182,7 @@
   "oldfieldname": "stock_uom", 
   "oldfieldtype": "Link", 
   "options": "UOM", 
+  "print_hide": 1, 
   "read_only": 1, 
   "reqd": 1, 
   "search_index": 0