Splunk DB Connect 3: How to resolve "Error in 'dbxquery' command: Could not find file: 'java.path'"

I am getting the following error whenever I try to use SQL explorer or create an input in DB Connect 3:> Error in 'dbxquery' command: Could not> find file: 'java.path' I have another server where I'm getting a similar, but slightly different error: > Error in 'dbxquery' command: Could not> find file: 'custom.java.path' The JRE home settings populated automatically in the DB Connect settings, and I've tried switching between the JRE and JDK home directories with no success. What would cause this type of error? Thank you!