diff --git a/rowers/c2stuff.py b/rowers/c2stuff.py
index c055242a..c0a79f30 100644
--- a/rowers/c2stuff.py
+++ b/rowers/c2stuff.py
@@ -220,11 +220,18 @@ def summaryfromsplitdata(splitdata,data,filename,sep='|'):
     velo = totaldist/totaltime
     avgpower = 2.8*velo**(3.0)
 
-    restvelo = restdistance/resttime
+    try:
+        restvelo = restdistance/resttime
+    except (ZeroDivisionError,OverflowError):
+        restvelo = 0
+        
     restpower = 2.8*restvelo**(3.0)
-    
-    avgdps = totaldist/data['stroke_count']
-    
+
+    try:
+        avgdps = totaldist/data['stroke_count']
+    except (ZeroDivisionError,OverflowError,KeyError):
+        avgdps = 0
+        
     from rowingdata import summarystring,workstring,interval_string