diff -r 9d1af81b20ef -r 9ac2fb6b1311 www/js/rec_edit.js
--- a/www/js/rec_edit.js	Wed Mar 18 19:46:15 2020 +0100
+++ b/www/js/rec_edit.js	Wed Mar 18 20:29:23 2020 +0100
@@ -48,7 +48,7 @@
  MMNa2CO3 = 105.996,
  MMNaCl = 58.443,
  MMCaOH2 = 74.06268;
-
+ data_loaded = 0;
 
 function createDelElements() {
  $('#eventWindow').jqxWindow({
@@ -851,6 +851,7 @@
    editYeast(dataRecord);
    editMash(dataRecord);
    $('#jqxTabs').jqxTabs('next');
+   data_loaded = 1;
   },
   loadError: function(jqXHR, status, error) {},
   beforeLoadComplete: function(records) { $('#jqxLoader').jqxLoader('open'); }
@@ -1922,6 +1923,11 @@
  function calcWater() {
 
   console.log('calcWater()');
+  if (! data_loaded) {
+   console.log('failsave');
+   return;
+  }
+
   var liters = 0,
   calcium = 0,
   magnesium = 0,