? underscores.patch
Index: popups_reference.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/popups_reference/popups_reference.module,v
retrieving revision 1.3.2.4
diff -u -p -r1.3.2.4 popups_reference.module
--- popups_reference.module	13 Jan 2009 00:14:49 -0000	1.3.2.4
+++ popups_reference.module	12 Feb 2009 21:56:50 -0000
@@ -93,6 +93,8 @@ function _popups_reference_links($field,
   $all_types = node_get_types();
   foreach ($field['referenceable_types'] as $type => $value) {
     if (!empty($value) && user_access("create $type content")) {
+      $type = strtr($type, '_', '-');
+      $src_type = strtr($src_type, '_', '-');
       $path = "node/add/$type";
       $links[] = l("Add $type", $path, array('class' => $pclass), "destination=node/add/$src_type");
     }