General Support: No collection name on collection.php page

For some reason, the collection name is showing up just fine on collections.php but is not showing at all on collection.php:

http://www.parallaxwebdesign.com/projects/suzy/plogger/index.php?level=collection&id=3

Here's the code from collection.php that's calling it (it's identical to what I have in collections.php:

print '<div class="meta-header"><p>';
print plogger_get_collection_name().' <br />';
print '(';

print $num_pictures.' ';
print ($num_pictures == 1) ? "picture" : "pictures";
print ')</p></div></div></li>';

Can someone tell me what might be happening here?