Version of Advanced Rocketry

1.12.2-2.0.0-13

Have you verified this is an issue in the latest unstable build

• Yes

Version of LibVulpes

0.4.2.-25

Version of Minecraft

1.12.2

Does this occur without other mods installed

• N/A

Crash report or log or visualVM (if applicable)

https://gist.github.com/PyralIron/7cdf2f8918f37f36618948443b0d2a7f

Description of the problem

Form a space elevator such that it lies between two chunks (or more)
Stand around 2-5 chunks away
Save the game and rejoin several times
Wait for the game to crash eventually while loading the world

This bug also happened to me.

Same issue here. My crash report if you need it: https://pastebin.com/PCAzhwjq

For everyone who has the same problem a temporary workaround i found is setting B:removeErroringTileEntities=true in forge.cfg but be very carefully with that because that could cause other problems and damage your world, so make sure to create backups regularly.

please try with the new AR - Reworked mod and post issue there if it is not fixed. the elevator was reworked too