diff --git a/src/api/index.py b/src/api/index.py
index c0374fb..a1d456e 100644
--- a/src/api/index.py
+++ b/src/api/index.py
@@ -160,19 +160,26 @@ def get_usage_detail():
 		else:
 			id 	= request.args['id'] if 'id' in request.args else request.args.get('node')
 		if 'app' not in request.args :
-			app_id = session['default.app']
+			if 'default.app' in session :
+				app_id = session['default.app']
+			else:
+				app_id = None
 		else:
 			app_id	= request.args.get('app')
 		#
 		# removing trailing white spaces
-		id = id.strip()
-		app_id = app_id.strip()
+		
 		gReader = factory.instance(type=class_read,args=p)
 		r = gReader.view('summary/app_resource_usage_details',key=p['uid'])
-		print r.keys()
-		r = r[id][app_id]
+		id = id.strip()
+		if app_id is not None :
+			app_id = app_id.strip()
+			r = r[id][app_id] 
+		else :
+			r = r[id]
+			
 	except Exception,e:
-		print (e)
+		print ' *** ',(e)
 	return json.dumps(r)