[BUG] PartBeamFormer crashes.

[KasumiNova]

Can't quite reproduce it, can only assume it's an occasional problem, but it's causing my saves to not work properly.
Using the latest NAE2.

[NotMyWing]

The log suggests that listenerLinkedList is null, which should never be the case since the code is unreachable if there's no connection to begin with. Please post the entire log if possible.

NAE2/src/main/java/co/neeve/nae2/common/parts/implementations/PartBeamFormer.java

Line 251 in 8f315f6

var iterator = this.listenerLinkedList.long2ObjectEntrySet().fastIterator();

[KasumiNova]

https://mclo.gs/KU0CmJC
Not sure if any of this will be useful in solving the problem, but this is the only log.

[NotMyWing]

Right, no anomalies in the log. I'll implement an extra safeguard, but in all honesty this should never have happened in the first place.

[Bili1Gd]

pause game when you change dimensions and enter game can prevent it maybe

[MRSlouzk]

I have the same crash too，it's my crash report here：https://mclo.gs/7cGDICT，I dont know how it happened，I did not do anything ever when it crashed, it's so sudden.