Final Ray's modifications

app/models/user/user.rb

@@ -52,7 +52,7 @@ class User
     infos = self.user_infos.detect {|info| info.key.to_s.eql?('profile') }
     if infos
       first_name = infos.attribute_values.detect {|value| value.key.to_s.eql?('first_name') }[I18n.locale.to_s] rescue nil
-      last_name = infos.attribute_values.detect {|value| value.key.to_s.eql?('last_name') }[I18n.locale.to_s] rescue nil
+      last_name = infos.attribute_values.detect {|value| value.key.to_s.eql?('family_name') }[I18n.locale.to_s] rescue nil
       return "#{first_name} #{last_name}"
     else
       return nil

app/models/user/user_attribute_model.rb

@@ -53,7 +53,7 @@ class UserAttributeModel
   end
   
   def is_disabled?
-    self.disabled
+    self.disabled.blank? ? false : self.disabled
   end
   
   def get_enabled_attribute_models