Hey,

we're using Thermos server 1.7.10.
This mod works except of one issue: As soons as we put a stack of items into the Tray and right click it twice, Minecraft crashes with an "Internal Error".

[18:16:12] [Server thread/WARN]: Failed to handle packet for /87.170.95.230:4933 java.lang.NullPointerException at net.minecraft.network.NetHandlerPlayServer.func_147351_a(NetHandlerPlayServer.java:1793) ~[nh.class:?] at net.minecraft.network.play.client.C0EPacketClickWindow.func_148833_a(SourceFile:32) ~[ix.class:?] at net.minecraft.network.play.client.C0EPacketClickWindow.func_148833_a(SourceFile:10) ~[ix.class:?] at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:245) ~[ej.class:?] at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:181) [nc.class:?] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:1023) [MinecraftServer.class:?] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:432) [lt.class:?] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:841) [MinecraftServer.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:693) [MinecraftServer.class:?] at java.lang.Thread.run(Unknown Source) [?:1.8.0_121] [18:16:12] [Server thread/INFO]: Tom lost connection: Internal server error

Really?
Wow... that sucks.

Third-party server software is not supported, especially when it's for old versions such as 1.7.10 and the server software in question is no longer being actively developed.

In 1.11 and higher the mod works differently internally so it may work better with non-standard server software then.