Credit Note functionality not working in Magento

Question

Hope someone here can assist me!

It seems I'm having a problem with creating a credit note in Magento 1.7.0.2 (Yes, I know it's a slightly older version - Going to update to 1.9 in due course).

Whenever you start a credit note on an order that has been invoiced and shipped, the place where items and quantities are filled in seems to be greyed out - I have no option to add items to be refunded!

I've disabled any non-standard modules and this hasn't helped and I've also re-indexed and cleared cache (just incase!).

I've posted a screenshot below.

(Please note, the other information such as address and payment info are visible - I've just blanked them out in the screengrab!)

Answer 1

Try to copy the entire directory (app/design/adminhtml/) from a clean magento v1.7 into your project. If it woun't help, deactivate some extensions in the community and local scope, maybe there is an evildoer. (Dont't forget to clear cache)