edfaught

I found the problem. The definition for DIR_FS_ADMIN requires a trailing slash.

Of course: <?php define('HTTP_SERVER', 'https://mystore.com'); define('HTTPS_SERVER', 'https://mystore.com'); define('ENABLE_SSL', false); define('HTTP_COOKIE_DOMAIN', ''); define('HTTPS_COOKIE_DOMAIN', ''); define('HTTP_COOKIE_PATH', '/admin'); define('HTTPS_COOKIE_PATH', '/admin'); define('HTTP_CATALOG_SERVER', 'https://mystore.com/'); define('HTTPS_CATALOG_SERVER', 'https://mystore.com/'); define('ENABLE_SSL_CATALOG', 'true'); define('DIR_FS_DOCUMENT_ROOT', '/home/myaccount/public_html/mystore.com'); define('DIR_WS_ADMIN', '/admin/'); define('DIR_WS_HTTPS_ADMIN', '/admin/'); define('DIR_FS_ADMIN', '/home/myaccount/public_html/mystore.com/admin'); define('DIR_WS_CATALOG', ''); define('DIR_WS_HTTPS_CATALOG', ''); define('DIR_FS_CATALOG', '/home/myaccount/public_html/mystore.com/'); define('DIR_WS_CATALOG_IMAGES', DIR_WS_CATALOG . 'images/'); define('DIR_WS_CATALOG_LANGUAGES', DIR_WS_CATALOG . 'includes/languages/'); define('DIR_FS_CATALOG_LANGUAGES', DIR_FS_CATALOG . 'includes/languages/'); define('DIR_FS_CATALOG_IMAGES', DIR_FS_CATALOG . 'images/'); define('DIR_FS_CATALOG_MODULES', DIR_FS_CATALOG . 'includes/modules/'); define('DIR_FS_BACKUP', DIR_FS_ADMIN . 'backups/'); define('DIR_FS_DOWNLOAD', DIR_FS_CATALOG . 'download/'); define('DIR_FS_DOWNLOAD_PUBLIC', DIR_FS_CATALOG . 'pub/'); ?>

After installation the admin page's entire adminAppMenu div contains no source HTML. There are no rendering errors and the source does contain links to the javascripts in the header. This is almost certainly some sort of error in my admin/includes/configure.php but I cannot figure it out. osCommerce v2.3.4.1 CE FROZEN

Not sure I want to follow this. Who is to say which is obsolete and which functions properly? Which version will work in a stable manner with the "official" PayPal app v5.018 with legacy 2.3.4 corrections?

v2.3.4.1 with the updated PayPal App v5.018 PHP Version 7.0.32

I cannot find where OSCOM_Hooks gets defined, or in my specific case it is not getting defined. This causes the following error: Call to a member function register() on null in catalog/admin/orders.php:15

I have duplicated/ run into this problem myself. Using Chrome Version 55.0.2883.87 m and osCommerce Online Merchant v2.3.4 with Bootstrap. Live site: https://nationalvnwarmuseum.c9.ixsecure.com/giftshop/ Clicking on any "Buy" button invokes a download instead of rendering the page. Works fine for me using Firefox. I tried clearing the cache to no avail...

Getting this error when trying Login with PayPal: Relying Party Validation error: redirect_uri provided in the request does not match with the registered redirect_uri. Have used HTTPFox to see the query string but cannot locate the return URI in it anywhere. What to try next?