I understand Rapid7 Nexpose Technology Add-on for Splunk is not officially supported for Splunk Enterprise version 7.3 or 8.0.0. Anybody out there currently running this Add-On with the newer versions of Splunk?
At the time of this answer, the rapid7 TA only works on 7.2 for. I ran into various errors when setting it up on 8.0, reverting back to 7.2 worked fine.