[11:39:29] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.IndexOutOfBoundsException: readerIndex(0) + length(1) exceeds writerIndex(0): UnpooledHeapByteBuf(ridx: 0, widx: 0, cap: 104704/104704)
	at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.7.0_67]
	at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.7.0_67]
	at g.a(SourceFile:46) [15w36d.jar:?]
	at azo.as(SourceFile:921) [15w36d.jar:?]
	at azo.a(SourceFile:378) [15w36d.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:125) [15w36d.jar:?]
Caused by: java.lang.IndexOutOfBoundsException: readerIndex(0) + length(1) exceeds writerIndex(0): UnpooledHeapByteBuf(ridx: 0, widx: 0, cap: 104704/104704)
	at io.netty.buffer.AbstractByteBuf.checkReadableBytes(AbstractByteBuf.java:1175) ~[netty-all-4.0.23.Final.jar:4.0.23.Final]
	at io.netty.buffer.AbstractByteBuf.readByte(AbstractByteBuf.joava:570) ~[netty-all-4.0.23.Final.jar:4.0.23.Final]
	at em.readByte(SourceFile:663) ~[15w36d.jar:?]
	at aql.a(SourceFile:87) ~[15w36d.jar:?]
	at aqr.a(SourceFile:981) ~[15w36d.jar:?]
	at bhr.a(SourceFile:522) ~[15w36d.jar:?]
	at gp.a(SourceFile:68) ~[15w36d.jar:?]
	at gp.a(SourceFile:11) ~[15w36d.jar:?]
	at fh$1.run(SourceFile:13) ~[15w36d.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.7.0_67]
	at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.7.0_67]
	at g.a(SourceFile:45) ~[15w36d.jar:?]
	... 3 more