From 73770ffa9df0d4edc63f0886a85b3bd1d5401103 2013-05-02 17:01:47
From: Brian E. Granger <ellisonbg@gmail.com>
Date: 2013-05-02 17:01:47
Subject: [PATCH] Merge pull request #3263 from minrk/nocp

fix set_last_checkpoint when no checkpoint
---

diff --git a/IPython/frontend/html/notebook/static/js/savewidget.js b/IPython/frontend/html/notebook/static/js/savewidget.js
index 796ac78..b20dafa 100644
--- a/IPython/frontend/html/notebook/static/js/savewidget.js
+++ b/IPython/frontend/html/notebook/static/js/savewidget.js
@@ -138,6 +138,9 @@ var IPython = (function (IPython) {
     }
 
     SaveWidget.prototype.set_last_checkpoint = function (checkpoint) {
+        if (!checkpoint) {
+            this.set_checkpoint_status("");
+        }
         var d = new Date(checkpoint.last_modified);
         this.set_checkpoint_status(
             "Last Checkpoint: " + d.format('mmm dd HH:MM')