Hi,
we have upgraded the prestashop version from 1.6.1.0 to 1.6.1.3, through one click upgrade module.
Since upgraded the version we are facing the issues in attachment section and save & stay button loading issue. We have raised the support request in the following forms https://www.prestashop.com/forums/topic/498397-1611-to-1613-spinning-save-and-save-and-attachment-not-working/
http://forge.prestashop.com/browse/PSCSX-7486
https://www.prestashop.com/forums/topic/498397-1611-to-1613-spinning-save-and-save-and-attachment-not-working/
and done with the following suggestions from different forums, but still the issue presence.
https://www.prestashop.com/forums/topic/393218-16011-problem-with-saving-products/
https://www.prestashop.com/forums/topic/495138-upgrading-1612-to-1613-cant-save-anything-in-bo/
https://www.prestashop.com/forums/topic/488793-imageattachment-tab-in-product-page-dont-load-and-spinning-save-button-problem/
Let me know what is the solutions for this
Thanks