First time submitting a github issue, so apologies in advanced if I've done this incorrectly.

I've had this issue both client side and server side now

https://pastebin.com/GJwpzKw3

Please test with FoamFix 0.10.7. Failing that, please test without JustEnoughIDs.

Humm... Apparently #238 shows it's not fixed in 0.10.7. Could you try with coremod.smallPropertyStorage=false?

Settings smallPropertyStorage to false does fix this crash.

The crash also happens with Not Enough Ids instead of JEIDs.

Well then, 0.10.8 should automatically disable that if JEIDs is detected.

That is also checked for. oh no it isn't! Let me fix that.

I've seen it with my very own eyes. It seems to be a rather rare crash, and I have no clue what causes it yet.

Foamfix by default still crashes with FF 0.10.9 and UCW 0.3.1, however disabling smallPropertyStorage as above seems to fix the crash entirely so far.

NEID/JEID not installed.

Was this fixed by UCW 0.3.2?

Yea, seems to be loading fine on 0.3.3 with smallPropertyStorage enabled.

Okay. Now we need to ensure this doesn't happen again, with another mod.