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Describe the crash
A few minutes after entering the aether, the game crashes

To Reproduce
Steps to reproduce the behavior:

1. Enter aether
2. Game will crash after a minute or two

Crash Log

A fatal error has been detected by the Java Runtime Environment:

EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000062eaa276, pid=16632, tid=0x000000000000076c

JRE version: Java(TM) SE Runtime Environment (8.0_241-b07) (build 1.8.0_241-b07)
Java VM: Java HotSpot(TM) 64-Bit Server VM (25.241-b07 mixed mode windows-amd64 compressed oops)
Problematic frame:
C [ActualMusic.dll+0x2a276]

Failed to write core dump. Minidumps are not enabled by default on client versions of Windows

An error report file with more information is saved as:
D:\MultiMC\instances\Rebirth of the Night\minecraft\hs_err_pid16632.log
Compiled method (c1) 356328 13375 3 com.sun.org.apache.xerces.internal.dom.DeferredAttrImpl::synchronizeData (86 bytes)
total in heap [0x0000000004bac410,0x0000000004bad700] = 4848
relocation [0x0000000004bac530,0x0000000004bac618] = 232
main code [0x0000000004bac620,0x0000000004bad280] = 3168
stub code [0x0000000004bad280,0x0000000004bad368] = 232
metadata [0x0000000004bad368,0x0000000004bad3b8] = 80
scopes data [0x0000000004bad3b8,0x0000000004bad5a0] = 488
scopes pcs [0x0000000004bad5a0,0x0000000004bad6e0] = 320
dependencies [0x0000000004bad6e0,0x0000000004bad6e8] = 8
nul chk table [0x0000000004bad6e8,0x0000000004bad700] = 24

Info (please complete the following information):

• Modpack Version: 2.76.2
• Server or Singleplayer: Server
• Version the world was created on: 2.76.2

Duplicate of #160