Reply Button Not Working

Dear Tech Support,

For some reason, the Reply button has stopped working on certain posts although it continues to work on others. On those pages where the Reply button doesn't work, it will show "waiting for response form <mysite.com>" momentarily after the Reply button is clicked but everything will remain static.

Please see the attached screenshot from one of the posts on which the Reply button just does not work any longer. There seems to be errors with the following according to Firebug -
1) Network Error 400 with ajexSubmitReply; and
2) JSON parse on line 137 of media/com_easydiscuss/scripts/easydiscuss_3.2.9676.static.min.js

Suggest you try the following threads -
1) Discussions > Forums > Global Mobility > Testing for Alpha Users Point: Test #2
2) Discussions > Forums > HR Generalists & Advisors > Check Also Search by Topic: This is Test Post #1

Could you please help check on why that is the case and how this can be rectified?

Many thanks!