[server] Can't access gkrelltopd from client

I have a headless home server (Ubuntu 16.04.1) which I monitor from my desktop with gkrellm. Occasionally, I notice that the CPU utilisation on the server spikes for between 10 and 50 seconds, but by the time I've logged in and started htop, utilisation has dropped again to normal, so I have installed gkrelltopd on the server, and gkrelltop on the client.

I start the client with gkrellm -s <server.fq.dn>

I have the line "plugin-enable gkrelltopd" in my server config /etc/gkrellmd.conf

When I enable the gkrelltop plugin in the client, I momentarily see server processes (openvpn, logitech media server) in the krell, but then gkrellm crashes with the following message:

Code:

gkrellm segmentation fault:  gkrelltop  (update_monitor)Aborted (core dumped)

Is this a bug, or are their other steps I have to go through to allow the plugin to be queried?

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[server] Can't access gkrelltopd from client