diff --git a/erpnext/setup/doctype/item_group/item_group.js b/erpnext/setup/doctype/item_group/item_group.js
index 46d4034..c55c7cb 100644
--- a/erpnext/setup/doctype/item_group/item_group.js
+++ b/erpnext/setup/doctype/item_group/item_group.js
@@ -20,7 +20,13 @@
 		frm.trigger("set_root_readonly");
 		frm.add_custom_button(__("Item Group Tree"), function() {
 			frappe.set_route("Tree", "Item Group");
-		}, "icon-sitemap");
+		});
+
+		if(!frm.is_new()) {
+			frm.add_custom_button(__("Items"), function() {
+				frappe.set_route("List", "Item", {"item_group": frm.doc.name});
+			});
+		}
 	},
 
 	set_root_readonly: function(frm) {
diff --git a/erpnext/setup/doctype/item_group/item_group.py b/erpnext/setup/doctype/item_group/item_group.py
index 5375db0..12899cd 100644
--- a/erpnext/setup/doctype/item_group/item_group.py
+++ b/erpnext/setup/doctype/item_group/item_group.py
@@ -60,13 +60,15 @@
 
 	def get_context(self, context):
 		context.show_search=True
+		context.page_length = 6
 		context.search_link = '/product_search'
 
 		start = int(frappe.form_dict.start or 0)
 		if start < 0:
 			start = 0
 		context.update({
-			"items": get_product_list_for_group(product_group = self.name, start=start, limit=24, search=frappe.form_dict.get("search")),
+			"items": get_product_list_for_group(product_group = self.name, start=start,
+				limit=context.page_length, search=frappe.form_dict.get("search")),
 			"parent_groups": get_parent_item_groups(self.name),
 			"title": self.name,
 			"products_as_list": cint(frappe.db.get_single_value('Website Settings', 'products_as_list'))
diff --git a/erpnext/stock/doctype/item/item.py b/erpnext/stock/doctype/item/item.py
index b546df4..454fc70 100644
--- a/erpnext/stock/doctype/item/item.py
+++ b/erpnext/stock/doctype/item/item.py
@@ -455,16 +455,18 @@
 
 	def cant_change(self):
 		if not self.get("__islocal"):
-			vals = frappe.db.get_value("Item", self.name, ["has_serial_no", "is_stock_item",
-				"valuation_method", "has_batch_no", "is_fixed_asset"], as_dict=True)
+			to_check = ("has_serial_no", "is_stock_item",
+				"valuation_method", "has_batch_no", "is_fixed_asset")
 
-			if vals and ((self.is_stock_item != vals.is_stock_item) or
-				vals.has_serial_no != self.has_serial_no or
-				vals.has_batch_no != self.has_batch_no or
-				cstr(vals.valuation_method) != cstr(self.valuation_method)):
-					if self.check_if_linked_document_exists():
-						frappe.throw(_("As there are existing transactions for this item, \
-							you can not change the values of 'Has Serial No', 'Has Batch No', 'Is Stock Item' and 'Valuation Method'"))
+			vals = frappe.db.get_value("Item", self.name, to_check, as_dict=True)
+
+			if vals:
+				for key in to_check:
+					if self.get(key) != vals.get(key):
+						if not self.check_if_linked_document_exists():
+							break # no linked document, allowed
+						else:
+							frappe.throw(_("As there are existing transactions for this item, you can not change the value of {0}").format(frappe.bold(self.meta.get_label(key))))
 
 			if vals and not self.is_fixed_asset and self.is_fixed_asset != vals.is_fixed_asset:
 				asset = frappe.db.get_all("Asset", filters={"item_code": self.name, "docstatus": 1}, limit=1)
diff --git a/erpnext/templates/generators/item_group.html b/erpnext/templates/generators/item_group.html
index b9926d6..674143d 100644
--- a/erpnext/templates/generators/item_group.html
+++ b/erpnext/templates/generators/item_group.html
@@ -31,10 +31,10 @@
 		</div>
 		<div class="text-center item-group-nav-buttons">
 			{% if frappe.form_dict.start|int > 0 %}
-			<a class="btn btn-default" href="{{ pathname }}?start={{ frappe.form_dict.start|int - 24 }}">Prev</a>
+			<a class="btn btn-default" href="/{{ pathname }}?start={{ frappe.form_dict.start|int - page_length }}">Prev</a>
 			{% endif %}
-			{% if items|length == 24 %}
-			<a class="btn btn-default" href="{{ pathname }}?start={{ frappe.form_dict.start|int + 24 }}">Next</a>
+			{% if items|length == page_length %}
+			<a class="btn btn-default" href="/{{ pathname }}?start={{ frappe.form_dict.start|int + page_length }}">Next</a>
 			{% endif %}
 		</div>
 		{% else %}