I am upgrading from ZC 1.3.9h to ZC 1.5.1. Back in Stock Notifications has been an excellent tool in 1.3.9h. "Ceon Back in Stock Notifications" appears as an entry on the Admin menu under Catalogue and seems to work. Should there be an entry under Admin Configuration to Enable/Disable the plugin as occurred in the previous version?

Also when the modified core file, 1.5.0\includes\functions\functions_general.php is used it conflicts with password_funcs.php.

[30-Nov-2013 21:27:28] PHP Fatal error: Cannot redeclare zen_create_random_value() (previously declared in (snip)\includes\functions\functions_general.php:613) in (snip)\includes\functions\password_funcs.php on line 86

Are there known problems with ZC1.5.1?