diff --git a/page_manager/page_manager.admin.inc b/page_manager/page_manager.admin.inc
--- a/page_manager/page_manager.admin.inc
+++ b/page_manager/page_manager.admin.inc
@@ -154,7 +154,7 @@
     $visible_path = '';
     if (!empty($task['admin path'])) {
       foreach (explode('/', $task['admin path']) as $bit) {
-        if ($bit[0] != '!') {
+        if (isset($bit[0]) && $bit[0] != '!') {
           $path[] = $bit;
         }
       }