In this version the developers introduced and made default the responsive templates. Some add-ons from the previous CS-Cart versions are compatible, but most aren't!
We have finished checking the compatibility and updating the add-ons for CS-Cart v4.2.x editions.
The list of updated and compatible add-on modules:
* updated to be compatible with cs-cart v.4.2.1
The update is free for all orders with valid update period, please verify it in your account.