diff --git a/buying/doctype/purchase_common/purchase_common.py b/buying/doctype/purchase_common/purchase_common.py
index 78264c2..79e4fe0 100644
--- a/buying/doctype/purchase_common/purchase_common.py
+++ b/buying/doctype/purchase_common/purchase_common.py
@@ -119,14 +119,15 @@
 		
 		import webnotes.utils
 		this_purchase_date = webnotes.utils.getdate(obj.doc.fields.get('posting_date') or obj.doc.fields.get('transaction_date'))
-
+		
 		for d in getlist(obj.doclist,obj.fname):
 			# get last purchase details
 			last_purchase_details = get_last_purchase_details(d.item_code, obj.doc.name)
 
 			# compare last purchase date and this transaction's date
 			last_purchase_rate = None
-			if last_purchase_details.last_purchase_date > this_purchase_date:
+			if last_purchase_details and \
+					(last_purchase_details.purchase_date > this_purchase_date):
 				last_purchase_rate = last_purchase_details['purchase_rate']
 			elif is_submit == 1:
 				# even if this transaction is the latest one, it should be submitted
@@ -467,7 +468,6 @@
 	# get against document date	
 	#-----------------------------
 	def get_prevdoc_date(self, obj):
-		import datetime
 		for d in getlist(obj.doclist, obj.fname):
 			if d.prevdoc_doctype and d.prevdoc_docname:
 				dt = sql("select transaction_date from `tab%s` where name = '%s'" % (d.prevdoc_doctype, d.prevdoc_docname))
diff --git a/buying/doctype/purchase_order/purchase_order.py b/buying/doctype/purchase_order/purchase_order.py
index be2833c..f08a319 100644
--- a/buying/doctype/purchase_order/purchase_order.py
+++ b/buying/doctype/purchase_order/purchase_order.py
@@ -208,10 +208,6 @@
 		# Step 3 :=> Check For Approval Authority
 		get_obj('Authorization Control').validate_approving_authority(self.doc.doctype, self.doc.company, self.doc.grand_total)
 		
-		# Step 4 :=> Update Current PO No. in Supplier as last_purchase_order.
-		update_supplier = webnotes.conn.set_value("Supplier", self.doc.supplier,
-			"last_purchase_order", self.doc.name)
-
 		# Step 5 :=> Update last purchase rate
 		purchase_controller.update_last_purchase_rate(self, is_submit = 1)
 
diff --git a/buying/doctype/supplier/supplier.py b/buying/doctype/supplier/supplier.py
index 75031c9..2255cfd 100644
--- a/buying/doctype/supplier/supplier.py
+++ b/buying/doctype/supplier/supplier.py
@@ -62,11 +62,6 @@
 		if not self.doc.naming_series:
 			self.doc.naming_series = ''
 
-		# create address
-		addr_flds = [self.doc.address_line1, self.doc.address_line2, self.doc.city, self.doc.state, self.doc.country, self.doc.pincode]
-		address_line = "\n".join(filter(lambda x : (x!='' and x!=None),addr_flds))
-		webnotes.conn.set(self.doc,'address', address_line)
-
 		# create account head
 		self.create_account_head()
 
@@ -124,7 +119,16 @@
 			if not sql("select name from tabAccount where name=%s", (self.doc.name + " - " + abbr)):
 				parent_account = self.get_parent_account(abbr)
 				
-				arg = {'account_name':self.doc.name,'parent_account': parent_account, 'group_or_ledger':'Ledger', 'company':self.doc.company,'account_type':'','tax_rate':'0','master_type':'Supplier','master_name':self.doc.name,'address':self.doc.address}
+				arg = {
+					'account_name': self.doc.name,
+					'parent_account': parent_account,
+					'group_or_ledger':'Ledger',
+					'company': self.doc.company,
+					'account_type': '',
+					'tax_rate': '0',
+					'master_type': 'Supplier',
+					'master_name': self.doc.name,
+				}
 				# create
 				ac = get_obj('GL Control').add_ac(cstr(arg))
 				msgprint("Created Account Head: "+ac)
diff --git a/patches/january_2013/purchase_price_list.py b/patches/january_2013/purchase_price_list.py
index 4a1369f..02c260e 100644
--- a/patches/january_2013/purchase_price_list.py
+++ b/patches/january_2013/purchase_price_list.py
@@ -1,6 +1,8 @@
 import webnotes
 
 def execute():
+	webnotes.reload_doc("stock", "doctype", "item_price")
+	
 	# check for selling
 	webnotes.conn.sql("""update `tabItem Price` set selling=1
 		where ifnull(selling, 0)=0 and ifnull(buying, 0)=0""")
diff --git a/stock/doctype/purchase_receipt/purchase_receipt.py b/stock/doctype/purchase_receipt/purchase_receipt.py
index 0015048..5c4aebd 100644
--- a/stock/doctype/purchase_receipt/purchase_receipt.py
+++ b/stock/doctype/purchase_receipt/purchase_receipt.py
@@ -223,7 +223,6 @@
 		self.values.append({
 			'item_code'					: d.fields.has_key('item_code') and d.item_code or d.rm_item_code,
 			'warehouse'					: wh,
-			'transaction_date'			: getdate(self.doc.modified).strftime('%Y-%m-%d'),
 			'posting_date'				: self.doc.posting_date,
 			'posting_time'				: self.doc.posting_time,
 			'voucher_type'				: 'Purchase Receipt',