As the versions 7.5 and 7.6 of the AtriumCore have reached end of support stages we felt we had to cover all the angles someone might run into. It's only fair to do so.
Information was added to the User Group Communities. The update includes a webex recording on how to apply the certificates and many other steps that should help to resolve any known issues with the Tibco certificate updates or starting the Tibco AMX Administrator service.
Be sure to subscribe to the BMC Atrium CMDB > Discussion community forums.