Hi,
Did you remove these JS files below from your homepage on purpose?
/media/system/js/mootools-core.js"
/media/system/js/core.js"
/media/system/js/modal.js
Because those files don't get loaded on your homepage, but they get loaded in other pages. The removal function, requires mootools library to run.
Alternatively you can try to this change and force to load them in all pages (where our module gets loaded)
1- Open this PHP file:
/modules/mod_flexible_cart/mod_flexible_cart.php
2- Look at the bottom and find this line:
require_once JModuleHelper::getLayoutPath('mod_flexible_cart');
3- right above it, include these lines:
vmJsApi::jQuery();
vmJsApi::jPrice();
vmJsApi::cssSite();
It should do the trick. But if you manually disable loading the mootools library on your homepage. You should disable this block. Mootools and core-mootools are pretty necessary libraries for most of the joomla related extensions as well.
Regards.
Support