diff --git a/app/models/ad_banner.rb b/app/models/ad_banner.rb
index 7377d852..39112960 100644
--- a/app/models/ad_banner.rb
+++ b/app/models/ad_banner.rb
@@ -15,7 +15,7 @@ class AdBanner
   FX_TYPES = ["blindX","blindY","blindZ","cover","curtainX","curtainY","fade","fadeZoom","growX","growY","scrollUp","scrollDown","scrollLeft","scrollRight","scrollHorz","scrollVert","shuffle","slideX","slideY","toss","turnUp","turnDown","turnLeft","turnRight","uncover","wipe","zoom"]
 attr_writer :transition_sec
   def transition_sec
-    self.transition_msec/1000
+    self.transition_msec/1000 rescue nil
   end
   
   def transition_sec=(sec)