From 09454b3e4e85caf05c2dd3824608f1cd662f6ad5 Mon Sep 17 00:00:00 2001
From: flavio <fdanesse@gmail.com>
Date: Fri, 22 Mar 2013 20:17:57 +0000
Subject: If the user has not created a sequence of images, Take snapshot throws an error.

---
diff --git a/montage.py b/montage.py
index 4664bb2..ee0facf 100644
--- a/montage.py
+++ b/montage.py
@@ -119,12 +119,13 @@ class View(gtk.EventBox):
 
     def exportframe(self):
         self.frames = kinematic.makeframes()
-        fsecs = self.frames.keys()
-        firstpixindex = fsecs[0]
+        if not self.frames:
+            return
+        firstpixindex = self.frames.keys()[0]
 
         x, y, width, height = self.mfdraw.get_allocation()
         pixmap = gtk.gdk.Pixmap(self.mfdraw.window, width, height)
-        self._draw_frame(fsecs[0], pixmap)
+        self._draw_frame(firstpixindex, pixmap)
         pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, False, 8, width, height)
         gtk.gdk.Pixbuf.get_from_drawable(pixbuf, pixmap, pixmap.get_colormap(), 0, 0, 0, 0, width, height)
 
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