diff --git a/tailbone_corepos/views/corepos/batches.py b/tailbone_corepos/views/corepos/batches.py
index a43e126..2708199 100644
--- a/tailbone_corepos/views/corepos/batches.py
+++ b/tailbone_corepos/views/corepos/batches.py
@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2020 Lance Edgar
+#  Copyright © 2010-2021 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -143,7 +143,11 @@ class BatchView(CoreOfficeMasterView):
 
         g.set_type('sale_price', 'currency')
         g.set_type('group_sale_price', 'currency')
-        g.set_type('cost', 'currency')
+        # TODO: some older installs don't have this field
+        if hasattr(corepos.BatchItem, 'cost'):
+            g.set_type('cost', 'currency')
+        else:
+            g.remove('cost')
 
         g.set_sort_defaults('id')
 
diff --git a/tailbone_corepos/views/corepos/products.py b/tailbone_corepos/views/corepos/products.py
index 39f372b..518f15b 100644
--- a/tailbone_corepos/views/corepos/products.py
+++ b/tailbone_corepos/views/corepos/products.py
@@ -352,6 +352,7 @@ class ProductUserView(CoreOfficeMasterView):
         'photo',
         'enable_online',
         'sold_out',
+        'sign_count',
     ]
 
     def configure_grid(self, g):