When optimizing a world (15700 chunks) the game crashes consistently at around 30%-40%
Description: Loading NBT data
java.util.zip.ZipException: invalid distance too far back
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:164)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:284)
at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
at java.io.DataInputStream.readFully(DataInputStream.java:195)
at java.io.DataInputStream.readUTF(DataInputStream.java:609)
at java.io.DataInputStream.readUTF(DataInputStream.java:564)
at gy.b(SourceFile:430)
at gy.a(SourceFile:78)
at he.a(SourceFile:69)
at gy.a(SourceFile:437)
at gy.a(SourceFile:81)
at gy.a(SourceFile:437)
at gy.a(SourceFile:81)
at hi.a(SourceFile:119)
at hi.a(SourceFile:84)
at hi.a(SourceFile:80)
at bnk.a(SourceFile:96)
at bnk.a(SourceFile:821)
at cmn.f(SourceFile:97)
at cfg.aG(SourceFile:1241)
at cjq.a(SourceFile:430)
at cfg.m(SourceFile:1241)
at cfg.c(SourceFile:818)
at cfg.a(SourceFile:392)
at net.minecraft.client.main.Main.main(SourceFile:144)
Please attach the full crash report and output log.