diff --git a/rowers/interactiveplots.py b/rowers/interactiveplots.py
index 2993b728..64df2848 100644
--- a/rowers/interactiveplots.py
+++ b/rowers/interactiveplots.py
@@ -1090,7 +1090,10 @@ def interactive_cum_flex_chart2(theworkouts,promember=0,
     try:
         datadf['y1'] = datadf.ix[:,yparam1]
     except KeyError:
-        datadf['y1'] = datadf['pace']
+        try:
+            datadf['y1'] = datadf['pace']
+        except KeyError:
+            return ['','<p>No non-zero data in selection</p>','','']
     if yparam2 != 'None':
         try:
 	    datadf['y2'] = datadf.ix[:,yparam2]