Important note - there's a long-standing bug in the AREDN code where OLSRD very occasionally fails to start on reboot.
Nightly build 1162 was released to add an unrelated feature, but may have made this existing OLSRD bug "less occasional". If you load 1162 on a node and find it reporting 0 OLSR entries and 0 nodes, not to panic; just restart OLSR from the Advanced Configuration menu to restore the node to normal operation. Note that even though the node shows no nodes, it's still routing traffic properly; it's just the Mesh Status page that's incorrect.
The AREDN team is digging into possible root causes and hopes to find the solution very soon.
Orv W6BI