Index: views/signup.views_default.inc
===================================================================
--- views/signup.views_default.inc	(revision 2441)
+++ views/signup.views_default.inc	(working copy)
@@ -12,6 +12,7 @@
  */
 function signup_views_default_views() {
   // Search the "default_views" directory for files ending in .view.php.
+  $views = array();
   $files = file_scan_directory(drupal_get_path('module', 'signup'). '/views/default_views', 'view.php');
   foreach ($files as $absolute => $file) {
     if (strpos($file->name, '_vbo_') !== FALSE && !module_exists('views_bulk_operations')) {