Merge branch 'develop'
diff --git a/erpnext/__version__.py b/erpnext/__version__.py
index 084a388..cfdd2f7 100644
--- a/erpnext/__version__.py
+++ b/erpnext/__version__.py
@@ -1,2 +1,2 @@
 from __future__ import unicode_literals
-__version__ = '5.7.6'
+__version__ = '5.7.7'
diff --git a/erpnext/accounts/report/accounts_payable/accounts_payable.js b/erpnext/accounts/report/accounts_payable/accounts_payable.js
index 2c36e52..9034f3e 100644
--- a/erpnext/accounts/report/accounts_payable/accounts_payable.js
+++ b/erpnext/accounts/report/accounts_payable/accounts_payable.js
@@ -18,7 +18,7 @@
 		},
 		{
 			"fieldname":"report_date",
-			"label": __("Date"),
+			"label": __("As on Date"),
 			"fieldtype": "Date",
 			"default": get_today()
 		},
diff --git a/erpnext/accounts/report/accounts_receivable/accounts_receivable.js b/erpnext/accounts/report/accounts_receivable/accounts_receivable.js
index 051328f..d400527 100644
--- a/erpnext/accounts/report/accounts_receivable/accounts_receivable.js
+++ b/erpnext/accounts/report/accounts_receivable/accounts_receivable.js
@@ -18,7 +18,7 @@
 		},
 		{
 			"fieldname":"report_date",
-			"label": __("Date"),
+			"label": __("As on Date"),
 			"fieldtype": "Date",
 			"default": get_today()
 		},
diff --git a/erpnext/buying/doctype/purchase_order/purchase_order.js b/erpnext/buying/doctype/purchase_order/purchase_order.js
index a5cd6ce..6ae83d0 100644
--- a/erpnext/buying/doctype/purchase_order/purchase_order.js
+++ b/erpnext/buying/doctype/purchase_order/purchase_order.js
@@ -32,7 +32,8 @@
 				cur_frm.add_custom_button(__('Receive'), this.make_purchase_receipt).addClass("btn-primary");
 
 				if(doc.is_subcontracted==="Yes") {
-					cur_frm.add_custom_button(__('Transfer Material to Supplier'), this.make_stock_entry);
+					cur_frm.add_custom_button(__('Transfer Material to Supplier'),
+						function() { me.make_stock_entry(); });
 				}
 			}
 
diff --git a/erpnext/hooks.py b/erpnext/hooks.py
index 3ae43fa..2a2d7c1 100644
--- a/erpnext/hooks.py
+++ b/erpnext/hooks.py
@@ -27,7 +27,7 @@
 """
 app_icon = "icon-th"
 app_color = "#e74c3c"
-app_version = "5.7.6"
+app_version = "5.7.7"
 github_link = "https://github.com/frappe/erpnext"
 
 error_report_email = "support@erpnext.com"
diff --git a/erpnext/manufacturing/doctype/production_order/production_order.py b/erpnext/manufacturing/doctype/production_order/production_order.py
index 6a6e6ed..2039d93 100644
--- a/erpnext/manufacturing/doctype/production_order/production_order.py
+++ b/erpnext/manufacturing/doctype/production_order/production_order.py
@@ -42,6 +42,8 @@
 		self.validate_warehouse()
 		self.calculate_operating_cost()
 		self.validate_delivery_date()
+		self.validate_qty()
+		self.validate_operation_time()
 
 		from erpnext.utilities.transaction_base import validate_uom_is_integer
 		validate_uom_is_integer(self, "stock_uom", ["qty", "produced_qty"])
@@ -327,6 +329,15 @@
 			frappe.throw(_("Production Order cannot be raised against a Item Template"), ItemHasVariantError)
 
 		validate_end_of_life(self.production_item)
+		
+	def validate_qty(self):
+		if not self.qty > 0:
+			frappe.throw(_("Quantity to Manufacture must be greater than 0."))
+			
+	def validate_operation_time(self):
+		for d in self.operations:
+			if not d.time_in_mins > 0:
+				frappe.throw(_("Operation Time must be greater than 0 for Operation {0}".format(d.operation))) 
 
 @frappe.whitelist()
 def get_item_details(item):
diff --git a/erpnext/manufacturing/doctype/production_order_operation/production_order_operation.json b/erpnext/manufacturing/doctype/production_order_operation/production_order_operation.json
index 86de38e..57663f8 100644
--- a/erpnext/manufacturing/doctype/production_order_operation/production_order_operation.json
+++ b/erpnext/manufacturing/doctype/production_order_operation/production_order_operation.json
@@ -276,7 +276,7 @@
    "print_hide": 0, 
    "read_only": 0, 
    "report_hide": 0, 
-   "reqd": 0, 
+   "reqd": 1, 
    "search_index": 0, 
    "set_only_once": 0, 
    "unique": 0
@@ -476,7 +476,7 @@
  "is_submittable": 0, 
  "issingle": 0, 
  "istable": 1, 
- "modified": "2015-08-19 12:45:53.834920", 
+ "modified": "2015-08-21 07:17:18.185276", 
  "modified_by": "Administrator", 
  "module": "Manufacturing", 
  "name": "Production Order Operation", 
diff --git a/erpnext/selling/report/customer_addresses_and_contacts/customer_addresses_and_contacts.json b/erpnext/selling/report/customer_addresses_and_contacts/customer_addresses_and_contacts.json
index deb90b7..e0fba61 100644
--- a/erpnext/selling/report/customer_addresses_and_contacts/customer_addresses_and_contacts.json
+++ b/erpnext/selling/report/customer_addresses_and_contacts/customer_addresses_and_contacts.json
@@ -1,17 +1,19 @@
 {
- "apply_user_permissions": 1,
- "creation": "2012-10-04 18:45:27",
- "docstatus": 0,
- "doctype": "Report",
- "idx": 1,
- "is_standard": "Yes",
- "modified": "2014-07-14 07:18:17.006732",
- "modified_by": "Administrator",
- "module": "Selling",
- "name": "Customer Addresses and Contacts",
- "owner": "Administrator",
- "query": "SELECT\n\t`tabCustomer`.name as customer_id,\n\t`tabCustomer`.customer_name,\n\t`tabCustomer`.customer_group,\n\t`tabAddress`.address_line1,\n\t`tabAddress`.address_line2,\n\t`tabAddress`.city,\n\t`tabAddress`.state,\n\t`tabAddress`.pincode,\n\t`tabAddress`.country,\n\t`tabAddress`.is_primary_address, \n\t`tabContact`.first_name,\n\t`tabContact`.last_name,\n\t`tabContact`.phone,\n\t`tabContact`.mobile_no,\n\t`tabContact`.email_id,\n\t`tabContact`.is_primary_contact\nFROM\n\t`tabCustomer`\n\tleft join `tabAddress` on (\n\t\t`tabAddress`.customer=`tabCustomer`.name\n\t)\n\tleft join `tabContact` on (\n\t\t`tabContact`.customer=`tabCustomer`.name\n\t)\nWHERE\n\t`tabCustomer`.docstatus<2\nORDER BY\n\t`tabCustomer`.name asc",
- "ref_doctype": "Customer",
- "report_name": "Customer Addresses And Contacts",
+ "add_total_row": 0, 
+ "apply_user_permissions": 1, 
+ "creation": "2012-10-04 18:45:27", 
+ "disabled": 0, 
+ "docstatus": 0, 
+ "doctype": "Report", 
+ "idx": 1, 
+ "is_standard": "Yes", 
+ "modified": "2015-08-24 11:44:00.711112", 
+ "modified_by": "Administrator", 
+ "module": "Selling", 
+ "name": "Customer Addresses And Contacts", 
+ "owner": "Administrator", 
+ "query": "SELECT\n\t`tabCustomer`.name as \"Customer ID:Link/Customer\",\n\t`tabCustomer`.customer_name as \"Customer Name\",\n\t`tabCustomer`.customer_group as \"Customer Group:Link/Customer Group\",\n\t`tabAddress`.address_line1 as \"Address Line 1\",\n\t`tabAddress`.address_line2 as \"Address Line 2\",\n\t`tabAddress`.city as \"City\",\n\t`tabAddress`.state as \"State\",\n\t`tabAddress`.pincode as \"Postal Code\",\n\t`tabAddress`.country as \"Country\",\n\t`tabAddress`.is_primary_address as \"Is Primary Address:Check\", \n\t`tabContact`.first_name as \"First Name\",\n\t`tabContact`.last_name as \"Last Name\",\n\t`tabContact`.phone as \"Phone\",\n\t`tabContact`.mobile_no as \"Mobile No\",\n\t`tabContact`.email_id as \"Email Id\",\n\t`tabContact`.is_primary_contact as \"Is Primary Contact:Check\"\nFROM\n\t`tabCustomer`\n\tleft join `tabAddress` on (\n\t\t`tabAddress`.customer=`tabCustomer`.name\n\t)\n\tleft join `tabContact` on (\n\t\t`tabContact`.customer=`tabCustomer`.name\n\t)\nWHERE\n\t`tabCustomer`.docstatus<2\nORDER BY\n\t`tabCustomer`.name asc", 
+ "ref_doctype": "Customer", 
+ "report_name": "Customer Addresses And Contacts", 
  "report_type": "Query Report"
-}
+}
\ No newline at end of file
diff --git a/erpnext/setup/page/setup_wizard/sample_data.py b/erpnext/setup/page/setup_wizard/sample_data.py
index b90cceb..2cebc91 100644
--- a/erpnext/setup/page/setup_wizard/sample_data.py
+++ b/erpnext/setup/page/setup_wizard/sample_data.py
@@ -12,7 +12,7 @@
 	to help the user get started"""
 
 	selling_items = frappe.get_all("Item", filters = {"is_sales_item": 1})
-	buying_items = frappe.get_all("Item", filters = {"is_sales_item": 0})
+	buying_items = frappe.get_all("Item", filters = {"is_purchase_item": 1})
 
 	if selling_items:
 		for i in range(3):
diff --git a/setup.py b/setup.py
index 7d4b20b..9ed46de 100644
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,6 @@
 from setuptools import setup, find_packages
 
-version = "5.7.6"
+version = "5.7.7"
 
 with open("requirements.txt", "r") as f:
 	install_requires = f.readlines()