I'm using  Accept.js

In the sandbox : https://jstest.authorize.net/v3/AcceptUI.js\

I have no issues, I get a valid nonce response, pass it to

  "https://apitest.authorize.net/xml/v1/request.api\

and I get correct responses of Denied or Accepted with AUTH codes and confirmation emails and settlement reports.

Using the production link : https://js.authorize.net/v3/AcceptUI.js\ 

I get a response error of:

E_WC_19: An error occurred during processing. Please try again.

If I intentionally mangle the LoginID or clientKey, i get a response frm sandbox and production of a login verification error.

I would appreciate any help and guidance on this issue.  I have tried a new clientKey on the production side, but that did not help.