Going to
http://www.icyphy.org/icyphy/gsrcCalendar.do?calendarName=icyphyCalendar&gsrc.location.group=icyphy

yielded:
<pre>
The requested URL /icyphy/gsrcCalendar.do was not found on this server.
</pre>

<p>Note that this is
<br/><code>http://www.icyphy.org/icyphy/</code>
and not 
<br/><code>http://www.icyphy.org/icyphyj/</code></p>

<p>So the problem is with the mapping to <code>icyphyj</code>.</p>

<p>The problem was that <code>php/ucb/group.php</code> was
not redirecting to the site + j.</p>