Suddenly receiving a Not Acceptable Mod_Security error on checkout.php when dropdown selected
Ray, after you helped be fix a few minor issues with my cart and checkout pages recently everything seems to work well, except I now notice that whenever I select a value from one of the dropdowns on my checkout.php page (prov - country - shipping) the confirm_cart.php is replaced with "Not Acceptable!
An appropriate representation of the requested resource could not be found on this server. This error was generated by Mod_Security." The Continue button remains and, when clicked, processes to PayPal ... but the Not Acceptable is a mystery. Can you think of what might be causing it?
UPDATED - it seems that changing any form value on the checkout page generates the Not Acceptable message. If I refresh the page, the message resets and the form data reverts to original values.