We're having the same issue with NullPointerException. It seems the agent can't handle any failure during config, and if you get any failures you need to wipe all the config and start again.
We get various errors but usually starting with the below (ticket open with SAP for this)
NullPointerException while processing request "CDC Request for OracleLogReaderAdapter for request type MDS_OPEN"
Hopefully the Dev team can improve this in the next release.