#59479, Install system can cause module code to run before install hook is run, patch by JonBob

modules/system.module

@@ -1006,7 +1006,6 @@ function system_modules_submit($form_id, $edit) {
   }
 
   module_list(TRUE, FALSE);
-  menu_rebuild();
 
   include './includes/install.inc';
   foreach ($new_modules as $module) {
@@ -1018,6 +1017,8 @@ function system_modules_submit($form_id, $edit) {
     }
   }
 
+  menu_rebuild();
+
   drupal_set_message(t('The configuration options have been saved.'));
   return 'admin/modules';
 }

modules/system/system.module

@@ -1006,7 +1006,6 @@ function system_modules_submit($form_id, $edit) {
   }
 
   module_list(TRUE, FALSE);
-  menu_rebuild();
 
   include './includes/install.inc';
   foreach ($new_modules as $module) {
@@ -1018,6 +1017,8 @@ function system_modules_submit($form_id, $edit) {
     }
   }
 
+  menu_rebuild();
+
   drupal_set_message(t('The configuration options have been saved.'));
   return 'admin/modules';
 }