diff --git a/addons/mail/models/mail_channel.py b/addons/mail/models/mail_channel.py
index cd57fc38bf8..3a14d8b4b12 100644
--- a/addons/mail/models/mail_channel.py
+++ b/addons/mail/models/mail_channel.py
@@ -211,7 +211,7 @@ class Channel(models.Model):
         # http://blogs.technet.com/b/exchange/archive/2006/10/06/3395024.aspx
         headers['X-Auto-Response-Suppress'] = 'OOF'
         if self.alias_domain and self.alias_name:
-            headers['List-Id'] = '%s.%s' % (self.alias_name, self.alias_domain)
+            headers['List-Id'] = '<%s.%s>' % (self.alias_name, self.alias_domain)
             headers['List-Post'] = '<mailto:%s@%s>' % (self.alias_name, self.alias_domain)
             # Avoid users thinking it was a personal message
             # X-Forge-To: will replace To: after SMTP envelope is determined by ir.mail.server
diff --git a/addons/point_of_sale/models/pos_order.py b/addons/point_of_sale/models/pos_order.py
index eb5bf41f527..580cecd8326 100644
--- a/addons/point_of_sale/models/pos_order.py
+++ b/addons/point_of_sale/models/pos_order.py
@@ -199,10 +199,14 @@ class PosOrder(models.Model):
         return InvoiceLine.sudo().create(inv_line)
 
     def _create_account_move_line(self, session=None, move=None):
-        def _flatten_tax_and_children(taxes):
+        def _flatten_tax_and_children(taxes, group_done=None):
             children = self.env['account.tax']
-            for tax in taxes:
-                children |= _flatten_tax_and_children(tax.children_tax_ids)
+            if group_done is None:
+                group_done = set()
+            for tax in taxes.filtered(lambda t: t.amount_type == 'group'):
+                if tax.id not in group_done:
+                    group_done.add(tax.id)
+                    children |= _flatten_tax_and_children(tax.children_tax_ids, group_done)
             return taxes + children
 
         # Tricky, via the workflow, we only have one id in the ids variable
diff --git a/addons/point_of_sale/static/src/js/screens.js b/addons/point_of_sale/static/src/js/screens.js
index 063b414ef52..c706bee1e56 100644
--- a/addons/point_of_sale/static/src/js/screens.js
+++ b/addons/point_of_sale/static/src/js/screens.js
@@ -1232,9 +1232,14 @@ var ClientListScreenWidget = ScreenWidget.extend({
             .then(function(partner_id){
                 self.saved_client_details(partner_id);
             },function(type,err){
+                var error_body = _t('Your Internet connection is probably down.');
+                if (err.data) {
+                    var except = err.data;
+                    error_body = except.arguments && except.arguments[0] || except.message || error_body;
+                }
                 self.gui.show_popup('error',{
                     'title': _t('Error: Could not Save Changes'),
-                    'body': _t('Your Internet connection is probably down.'),
+                    'body': error_body,
                 });
             });
     },
diff --git a/addons/stock/models/product.py b/addons/stock/models/product.py
index 7d06ff73ac8..e8eb0ef97a0 100644
--- a/addons/stock/models/product.py
+++ b/addons/stock/models/product.py
@@ -372,8 +372,14 @@ class Product(models.Model):
     @api.multi
     def write(self, values):
         res = super(Product, self).write(values)
-        if 'active' in values and not values['active'] and self.mapped('orderpoint_ids').filtered(lambda r: r.active):
-            raise UserError(_('You still have some active reordering rules on this product. Please archive or delete them first.'))
+        if 'active' in values and not values['active']:
+            products = self.mapped('orderpoint_ids').filtered(lambda r: r.active).mapped('product_id')
+            if products:
+                msg = _('You still have some active reordering rules on this product. Please archive or delete them first.')
+                msg += '\n\n'
+                for product in products:
+                    msg += '- %s \n' % product.display_name
+                raise UserError(msg)
         return res
 
 class ProductTemplate(models.Model):
diff --git a/addons/stock_account/models/account_invoice.py b/addons/stock_account/models/account_invoice.py
index 9b239453e61..229bd54eeb7 100644
--- a/addons/stock_account/models/account_invoice.py
+++ b/addons/stock_account/models/account_invoice.py
@@ -30,13 +30,13 @@ class AccountInvoice(models.Model):
         company_currency = inv.company_id.currency_id
         price_unit = i_line._get_anglo_saxon_price_unit()
         if inv.currency_id != company_currency:
-            currency_id = inv.currency_id.id
+            currency = inv.currency_id
             amount_currency = i_line._get_price(company_currency, price_unit)
         else:
-            currency_id = False
+            currency = False
             amount_currency = False
 
-        return self.env['product.product']._anglo_saxon_sale_move_lines(i_line.name, i_line.product_id, i_line.uom_id, i_line.quantity, price_unit, currency=currency_id, amount_currency=amount_currency, fiscal_position=inv.fiscal_position_id, account_analytic=i_line.account_analytic_id, analytic_tags=i_line.analytic_tag_ids)
+        return self.env['product.product']._anglo_saxon_sale_move_lines(i_line.name, i_line.product_id, i_line.uom_id, i_line.quantity, price_unit, currency=currency, amount_currency=amount_currency, fiscal_position=inv.fiscal_position_id, account_analytic=i_line.account_analytic_id, analytic_tags=i_line.analytic_tag_ids)
 
 
 class AccountInvoiceLine(models.Model):