Index: vertical_tabs.install
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/vertical_tabs/vertical_tabs.install,v
retrieving revision 1.1.2.4
diff -u -r1.1.2.4 vertical_tabs.install
--- vertical_tabs.install	11 Jan 2009 01:09:21 -0000	1.1.2.4
+++ vertical_tabs.install	3 Apr 2009 06:54:58 -0000
@@ -38,6 +38,7 @@
       $theme = 'garland';
       $info = color_get_info($theme);
       $palette = color_get_palette($theme);
+      drupal_load('module', 'vertical_tabs');
       vertical_tabs_generate_stylesheet('garland', $info, $palette);
     }
   }