Redpower Error

When clicking on a timer with a block in hand.


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java.lang.NullPointerException
	at iv.a(NetServerHandler.java:639)
	at fk.a(SourceFile:58)
	at cf.b(MemoryConnection.java:80)
	at iv.d(NetServerHandler.java:136)
	at iw.b(NetworkListenThread.java:57)
	at bec.b(IntegratedServerListenThread.java:108)
	at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:702)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:598)
	at bdz.q(IntegratedServer.java:123)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
	at fy.run(SourceFile:849)
--- END ERROR REPORT f0c59ce8 ----------