Hopefully posting this in the right place. I didn't see an existing bug report for this.

Environment:
Server MP, FTB Beyond 1.4.2
Resource Pack: Faithful 32

Crash Error:
The game crashed whilst unexpected error
Error: java.lang.IllegalArgumentException: Invalid hand null

Crash Report: (http://textuploader.com/dro3z)

Issue Description:
Placed Network Controller, created basic network
Placed Flux Plug on Ender IO Vibrant Capacitor Bank
Placed Flux point on Ender IO SAG Mill
Right clicked to configure Flux Point
Crashed
Restarted game
Reproduced issue

Issue reoccurs now when I right click on any Flux Networks component, client hard crashes. Applicable chunks are loaded via FTB Utils. Server restart has no effect.

Please let me know if I can provide any more information. Very nice mod.

Thanks for your nice comment! There is in fact 5 others :P #91 #90 #89 #87 #85. Blame FTB Beyond I fixed this ages ago.

Sorry, still getting used to Git

no worries :)