RECONCILE computers fail. Error sdp.ajax.request.send.error

RECONCILE computers fail. Error sdp.ajax.request.send.error

While I have been able to do this historically, the ability to reconcile two identical workstations (one has the _old indicator) no longer works with my browser (IE8). 
 
Once I select two computers and try to reconcilse, I get a popup browser error: sdp.ajax.request.send.error
 
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