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via GitHub by Zilacon
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Not in GZIP format
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java.util.zip.ZipException: Not in GZIP format at java.util.zip.GZIPInputStream.readHeader(Unknown Source) at java.util.zip.GZIPInputStream.<init>(Unknown Source) at java.util.zip.GZIPInputStream.<init>(Unknown Source) at net.minecraft.nbt.CompressedStreamTools.func_74792_a(CompressedStreamTools.java:62) at net.minecraft.network.packet.Packet.func_73283_d(Packet.java:349) at net.minecraft.network.packet.Packet.func_73276_c(Packet.java:303) at net.minecraft.network.packet.Packet104WindowItems.func_73267_a(SourceFile:30) at net.minecraft.network.packet.Packet.func_73272_a(Packet.java:166) at net.minecraft.network.TcpConnection.func_74447_i(TcpConnection.java:325) at net.minecraft.network.TcpConnection.func_74450_c(TcpConnection.java:549) at net.minecraft.network.TcpReaderThread.run(SourceFile:94)