Originally filed at the Debian BTS by Laurent Bonnaud at:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=189046

Summary:

Someone left off a few filename extensions at the end of some image
filenames in the balsa's XML yelp file.

--- balsa.xml~  2003-03-04 17:48:09.000000000 +1100
+++ balsa.xml   2003-04-16 02:20:33.000000000 +1000
@@ -125,7 +125,7 @@
 <sect1 id="introduction">
 <title>Introduction</title>
      
-<graphic fileref="figures/balsa_logo" format="PNG"
srccredit="tigert"></graphic>
+<graphic fileref="figures/balsa_logo.png" format="PNG"
srccredit="tigert"></graphic>
  
 <para>
   &Balsa; is a graphical mail client similar to Eudora on Windows. It
@@ -1658,7 +1658,7 @@
   <screenshot>
          <mediaobject>
            <imageobject><imagedata
-               fileref="figures/newmsg-window-attachments" format="PNG"/>
+               fileref="figures/newmsg-window-attachments.png" format="PNG"/>
            </imageobject>
          </mediaobject>
   </screenshot>