1.5.0.5 Trying to open mutator or frame housing gui causes serverside NPE

[artforz]

#!
2013-03-03 15:38:19 [SEVERE] [ForgeModLoader] A critical server error occured handling a packet, kicking 4736
java.lang.NullPointerException
    at binnie.core.machines.Machine.getInterfaces(Machine.java:83)
    at binnie.core.machines.Machine.addGUINetworkData(Machine.java:221)
    at binnie.core.machines.TileEntityMachine.addGUINetworkData(TileEntityMachine.java:259)
    at binnie.craftgui.window.ContainerCraftGUI.b(ContainerCraftGUI.java:179)
    at rq.a(SourceFile:38)
    at cpw.mods.fml.common.network.NetworkRegistry.openRemoteGui(NetworkRegistry.java:309)
    at cpw.mods.fml.common.network.FMLNetworkHandler.openGui(FMLNetworkHandler.java:335)
    at qx.openGui(EntityPlayer.java:2304)
    at binnie.core.proxy.BinnieProxy.openGui(BinnieProxy.java:40)
    at binnie.extrabees.proxy.Proxy.openGui(Proxy.java:15)
    at binnie.extrabees.apiary.ComponentExtraBeeGUI.onRightClick(ComponentExtraBeeGUI.java:21)
    at binnie.core.machines.Machine.onRightClick(Machine.java:138)
    at binnie.core.machines.BlockMachine.a(BlockMachine.java:88)
    at ir.a(ItemInWorldManager.java:411)
    at iv.a(NetServerHandler.java:579)
    at fk.a(SourceFile:58)
    at cg.b(TcpConnection.java:458)
    at iv.d(NetServerHandler.java:136)
    at iw.b(NetworkListenThread.java:57)
    at ht.b(SourceFile:30)
    at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:703)
    at ho.r(DedicatedServer.java:269)
    at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:599)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
    at fy.run(SourceFile:849)