Hello, I have few tips:
1. I believe the following pollers are missing: "N.Status.ICMP.Native" and "N.ResponseTime.ICMP.Native". Please try to add them
2. Which kind of error do you receive on List Resources? Is the device properly configured to respond on "public" community string?
I found the problem, not sure why but this install of NPM seems to be using an engine ID of 6 instead of 1. Everything came good once that was changed.