Direwolf20 1.6.4-1.0.16 server crash

[earc1000]

Tech specs:
OS: Linux Ubuntu 64Bit
RAM (for mc server): 6GB out of 16GB
Java version: 1.7.0_25 64Bit

The server starts just fine until the world has finished loading then it crashes with an JSON exception from numina. I can run other FTB servers just fine (Magic Farm). It is a fresh installation with a new world and the only thing i have changed or added are the JVM flags: (changes are bold)
-server -Xms6G -Xmx6G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XXarallelGCThreads=2 -XX:ConcGCThreads=1 -XXermSize=128m

The whole computer is dedicated to MC servers so no other applications are running.
Crash log is added

Please help

 

[Wagon153]

Modular Powersuits ias having problems loading its own recipes. Not sure how to fix that other then grabbing a fresh version of Numina, Modular Powersuits, and their config.