I'm using Nexerelin and for some reason Diable Avionic's systems arn't spawning, and they also can't be joined from a new game (fatal crash: null).
I am 99% sure this is a mod conflict with something else on my enabled mods list, which is as follows:
-Lightshow for SWP
-Arsenal Expansion
-BRDY
-Combat Chatter
-Console Commands
-Diable Avionics
-Disassemble/Reassemble
-Hegemony EA
-IBO Mobile Suits
-Interstellar Imperium
-Lazylib
-Neutrino Corporation (they have the same bug, incidentially)
-Nexerelin
-ORA
-SCY
-Shadowyards
-SWP
-Underworld
-Unknown Skies
-Upgraded Rotary Weapons
-Audioplus
-Graphicslib