Server crashes when placing Applied Energistics 2's Energy Cell next to configured Fluix Point.
After server restart everything works without any issues.
I couldn't replicate the crash by placing Flux Point on already placed Energy Cell.

Crash log http://paste.feed-the-beast.com/view/99407a1a
Test setup http://i.imgur.com/KSBseXm.png

FluxNetworks-1.10.2-1.2.3
SonarCore-1.10.2-3.2.7
appliedenergistics2-rv4-alpha-11.jar
forge 12.18.3.2254

Couldn't recreate are there any other details you could provide? Can you replicate it every time?

Can now recreate, but no closer to finding the cause.

This is an AE2 issue, related to the GridProxy not being created if it's null. I've put a null pointer my end though. So it's fixed.