Found out where the jQuery BBQ library is actually kept.

diff --git a/mkdru.module b/mkdru.module
index b21b38b..9bc03b4 100644 (file)
--- a/mkdru.module
+++ b/mkdru.module
@@ -298,7 +298,7 @@ function theme_mkdru_js(&$variables) {
   drupal_add_js(variable_get('pz2_js_path', 'pazpar2/js') . '/pz2.js', array(
     'type' => 'file', 'scope' => 'footer', 'defer' => TRUE, 'preprocess' => FALSE));
   // jQuery plugin for query string/history manipulation.
-  drupal_add_library('overlay', 'jquery-bbq');
+  drupal_add_library('system', 'jquery.bbq');
   drupal_add_js($path . '/mkdru.theme.js', array(
     'type' => 'file', 'scope' => 'footer', 'defer' => TRUE, 'preprocess' => FALSE));
   drupal_add_js($path . '/mkdru.client.js', array(