Index: CHANGELOG.txt
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/admin_menu/CHANGELOG.txt,v
retrieving revision 1.1.2.4
diff -u -p -r1.1.2.4 CHANGELOG.txt
--- CHANGELOG.txt	28 Sep 2007 16:34:58 -0000	1.1.2.4
+++ CHANGELOG.txt	28 Sep 2007 23:52:15 -0000
@@ -6,6 +6,7 @@ Admin Menu x.x-x.x, xxxx-xx-xx
 
 Admin Menu 5.x-1.x, xxxx-xx-xx
 ------------------------------
+Fixed path_to_theme() call breaking blocks page.
 #177582 by sun: Fixed bluebreeze theme compatibility.
 
 
Index: admin_menu.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/admin_menu/admin_menu.module,v
retrieving revision 1.10.4.6
diff -u -p -r1.10.4.6 admin_menu.module
--- admin_menu.module	8 Sep 2007 18:01:08 -0000	1.10.4.6
+++ admin_menu.module	28 Sep 2007 23:51:52 -0000
@@ -37,11 +37,15 @@ function admin_menu_block($op = 'list', 
         'file' => drupal_get_path('module', 'admin_menu') . '/admin_menu.css',
         'type' => 'module',
       );
-      if (file_exists(path_to_theme() . '/admin_menu.css')) {
-        $css_files[] = array(
-          'file' => path_to_theme() . '/admin_menu.css',
-          'type' => 'theme',
-        );
+      // path_to_theme() invokes init_theme(), thus it must not be invoked in
+      // block settings to allow initializing of the selected theme.
+      if (strpos($_GET['q'], 'admin/build/block') === FALSE) {
+        if (file_exists(path_to_theme() . '/admin_menu.css')) {
+          $css_files[] = array(
+            'file' => path_to_theme() . '/admin_menu.css',
+            'type' => 'theme',
+          );
+        }
       }
       foreach ($css_files as $css_file) {
         drupal_add_css($css_file['file'], $css_file['type'], 'all', false);