Version: 1.73 (vanilla server w/ forge)

Reproduction steps:
Print out a program using edit, craft all pages together as a "Printed Pages" item, and attempt to read them.

The error:
Spoiler

[11:34:43 WARN]: Failed to handle packet for /127.0.0.1:61997
java.lang.NullPointerException
		at net.minecraft.network.NetHandlerPlayServer.func_147346_a(NetHandlerPl
ayServer.java:918) ~[nh.class:?]
		at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.func_
148833_a(SourceFile:60) ~[jo.class:?]
		at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.func_
148833_a(SourceFile:9) ~[jo.class:?]
		at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java
:244) ~[ej.class:?]
		at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:
173) [nc.class:?]
		at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.jav
a:980) [MinecraftServer.class:?]
		at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(Dedicated
Server.java:430) [lt.class:?]
		at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.jav
a:798) [MinecraftServer.class:?]
		at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:658) [M
inecraftServer.class:?]
		at java.lang.Thread.run(Unknown Source) [?:1.8.0_40]
[11:34:43 INFO]: byzudo lost connection: Internal server error
[11:34:43 INFO]: byzudo left the game.

What I expected:
The contents of the pages to be shown.