The SOI dashboard connector status shows: "Status Description: Connector error occurred: Failed to initialize".
The APM connector install updates the \soi\lib\snmp4j.jar file with an incompatible version.
SOI 4.2 SNMP connector 18.104.22.168 APM connector 3.6.3 2
The APM connector updated the \soi\lib\snmp4j.jar file, the date of the file was 11/29/2018 snmp4j.jar. We replaced the file with the one the SNMP connector installs dated 3/5/2014 snmp4j.jar. Now the SNMP connector and APM connector both started. A fix will be available in the future for this.