Вот это мне выдало:
GET: version.md5
REPOSITORY: mclient
JAVAOPTS:
GET: ./version.md5

Java Path: C:/Program Files/Java/jre1.8.0_45/bin/java.exe
Heap size: 247.0
Java home: C:\Program Files\Java\jre1.8.0_45
Rerun client with optimal parameters

GET: ./version.md5

Java Path: C:/Program Files/Java/jre1.8.0_45/bin/java.exe
Heap size: 989.0

RP2

[INFO]: System Arch: x86

[INFO]: Head accessories: + 115
[INFO]: Body accessories: + 8
[INFO]: Other accessories: + 8
[INFO]: Repository: mclient

Animation thread started.

Compositor start...

[INFO]: Render mode: Reflection
[INFO]: Antialiasing: 9x
[INFO]: options.alphasort: ON
[INFO]: Render Distance: Far

[INFO]: Language: ru_RU

Init water shaders





Exception in thread "MCGL main thread" java.lang.OutOfMemoryError
at sun.misc.Unsafe.allocateMemory(Native Method)
at java.nio.DirectByteBuffer.‹init›(Unknown Source)
at java.nio.ByteBuffer.allocateDirect(Unknown Source)
at net.minecraft.C.vdb.c(Unknown Source)
at net.minecraft.T.zj.‹init›(Unknown Source)
at net.minecraft.T.uk.f(Unknown Source)
at net.minecraft.T.uk.‹init›(Unknown Source)
at net.minecraft.client.Minecraft.p(Unknown Source)
at net.minecraft.client.Minecraft.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Animation thread stop.

java.lang.OutOfMemoryError