David Robertson
- davidjrobertson
- davidjrobertson
- Europe/London
- Yes
- No
MC-26203![[Mojang] Searge (Michael Stoyke)](../../../data/assets/gravatar/searge.png){kind=small}
I've been working on a PvP game map that makes heavy use of command blocks and I've noticed that when no players are connected to the server, the server console is spammed with this error:
{{{
[timestamp] [Server thread/ERROR]: Couldn't process command
java.lang.NullPointerException
}}}As soon as a player connects this stops.
Since the error message mentions processing commands, I first thought that this was some issue with command blocks on a clock, but after stopping all of the clocks the issue still appeared.
World files available if desired.
I've been working on a PvP game map that makes heavy use of command blocks and I've noticed that when no players are connected to the server, the server console is spammed with this error:
{{{
[timestamp] [Server thread/ERROR]: Couldn't process command
java.lang.NullPointerException
}}}As soon as a player connects this stops.
Since the error message mentions processing commands, I first thought that this was some issue with command blocks on a clock, but after stopping all of the clocks the issue still appeared.
World files available if desired.
I've been working on a PvP game map that makes heavy use of command blocks and I've noticed that when no players are connected to the server, the server console is spammed with this error:
<code>
[timestamp] [Server thread/ERROR]: Couldn't process command
java.lang.NullPointerException
</code>As soon as a player connects this stops.
Since the error message mentions processing commands, I first thought that this was some issue with command blocks on a clock, but after stopping all of the clocks the issue still appeared.
World files available if desired.
I've been working on a PvP game map that makes heavy use of command blocks and I've noticed that when no players are connected to the server, the server console is spammed with this error:
<code>
[timestamp] [Server thread/ERROR]: Couldn't process command
java.lang.NullPointerException
</code>As soon as a player connects this stops.
Since the error message mentions processing commands, I first thought that this was some issue with command blocks on a clock, but after stopping all of the clocks the issue still appeared.
World files available if desired.
I've been working on a PvP game map that makes heavy use of command blocks and I've noticed that when no players are connected to the server, the server console is spammed with this error:
[timestamp] [Server thread/ERROR]: Couldn't process command java.lang.NullPointerExceptionAs soon as a player connects this stops.
Since the error message mentions processing commands, I first thought that this was some issue with command blocks on a clock, but after stopping all of the clocks the issue still appeared.
World files available if desired.
I've been working on a PvP game map that makes heavy use of command blocks and I've noticed that when no players are connected to the server, the server console is spammed with this error:
[timestamp] [Server thread/ERROR]: Couldn't process command java.lang.NullPointerExceptionAs soon as a player connects this stops.
Since the error message mentions processing commands, I first thought that this was some issue with command blocks on a clock, but after stopping all of the clocks the issue still appeared.
World files available if desired.
I've been working on a PvP game map that makes heavy use of command blocks and I've noticed that when no players are connected to the server, the server console is spammed with this error:
[timestamp] [Server thread/ERROR]: Couldn't process command java.lang.NullPointerExceptionAs soon as a player connects this stops.
Since the error message mentions processing commands, I first thought that this was some issue with command blocks on a clock, but after stopping all of the clocks the issue still appeared.
World files available if desired.
I've been working on a PvP game map that makes heavy use of command blocks and I've noticed that when no players are connected to the server, the server console is spammed with this error:
[timestamp] [Server thread/ERROR]: Couldn't process command java.lang.NullPointerException at java.util.Collections.shuffle(Collections.java:497) ~[?:1.7.0_45] at java.util.Collections.shuffle(Collections.java:469) ~[?:1.7.0_45] at ad.c(SourceFile:127) ~[minecraft_server.1.7.2.jar:?] at ad.a(SourceFile:44) ~[minecraft_server.1.7.2.jar:?] at y.d(SourceFile:114) ~[minecraft_server.1.7.2.jar:?] at bu.b(SourceFile:33) ~[minecraft_server.1.7.2.jar:?] at z.a(SourceFile:58) [minecraft_server.1.7.2.jar:?] at afb.a(SourceFile:79) [minecraft_server.1.7.2.jar:?] at ain.a(SourceFile:49) [minecraft_server.1.7.2.jar:?] at mj.a(SourceFile:405) [minecraft_server.1.7.2.jar:?] at mj.b(SourceFile:134) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.u(SourceFile:503) [minecraft_server.1.7.2.jar:?] at lj.u(SourceFile:265) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.t(SourceFile:441) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.run(SourceFile:358) [minecraft_server.1.7.2.jar:?] at ky.run(SourceFile:617) [minecraft_server.1.7.2.jar:?]As soon as a player connects this stops.
Since the error message mentions processing commands, I first thought that this was some issue with command blocks on a clock, but after stopping all of the clocks the issue still appeared.
World files available if desired.
I've been working on a PvP game map that makes heavy use of command blocks and I've noticed that when no players are connected to the server, the server console is spammed with this error:
[timestamp] [Server thread/ERROR]: Couldn't process command java.lang.NullPointerException at java.util.Collections.shuffle(Collections.java:497) ~[?:1.7.0_45] at java.util.Collections.shuffle(Collections.java:469) ~[?:1.7.0_45] at ad.c(SourceFile:127) ~[minecraft_server.1.7.2.jar:?] at ad.a(SourceFile:44) ~[minecraft_server.1.7.2.jar:?] at y.d(SourceFile:114) ~[minecraft_server.1.7.2.jar:?] at bu.b(SourceFile:33) ~[minecraft_server.1.7.2.jar:?] at z.a(SourceFile:58) [minecraft_server.1.7.2.jar:?] at afb.a(SourceFile:79) [minecraft_server.1.7.2.jar:?] at ain.a(SourceFile:49) [minecraft_server.1.7.2.jar:?] at mj.a(SourceFile:405) [minecraft_server.1.7.2.jar:?] at mj.b(SourceFile:134) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.u(SourceFile:503) [minecraft_server.1.7.2.jar:?] at lj.u(SourceFile:265) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.t(SourceFile:441) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.run(SourceFile:358) [minecraft_server.1.7.2.jar:?] at ky.run(SourceFile:617) [minecraft_server.1.7.2.jar:?]As soon as a player connects this stops.
Since the error message mentions processing commands, I first thought that this was some issue with command blocks on a clock, but after stopping all of the clocks the issue still appeared.
World files available if desired.
EDIT: this seems to be caused by a command block on a clock running a command similar to /tp @r[x,y,z,r] x y z
I've been working on a PvP game map that makes heavy use of command blocks and I've noticed that when no players are connected to the server, the server console is spammed with this error:
[timestamp] [Server thread/ERROR]: Couldn't process command java.lang.NullPointerException at java.util.Collections.shuffle(Collections.java:497) ~[?:1.7.0_45] at java.util.Collections.shuffle(Collections.java:469) ~[?:1.7.0_45] at ad.c(SourceFile:127) ~[minecraft_server.1.7.2.jar:?] at ad.a(SourceFile:44) ~[minecraft_server.1.7.2.jar:?] at y.d(SourceFile:114) ~[minecraft_server.1.7.2.jar:?] at bu.b(SourceFile:33) ~[minecraft_server.1.7.2.jar:?] at z.a(SourceFile:58) [minecraft_server.1.7.2.jar:?] at afb.a(SourceFile:79) [minecraft_server.1.7.2.jar:?] at ain.a(SourceFile:49) [minecraft_server.1.7.2.jar:?] at mj.a(SourceFile:405) [minecraft_server.1.7.2.jar:?] at mj.b(SourceFile:134) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.u(SourceFile:503) [minecraft_server.1.7.2.jar:?] at lj.u(SourceFile:265) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.t(SourceFile:441) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.run(SourceFile:358) [minecraft_server.1.7.2.jar:?] at ky.run(SourceFile:617) [minecraft_server.1.7.2.jar:?]As soon as a player connects this stops.
Since the error message mentions processing commands, I first thought that this was some issue with command blocks on a clock, but after stopping all of the clocks the issue still appeared.
World files available if desired.
EDIT: this seems to be caused by a command block on a clock running a command similar to /tp @r[x,y,z,r] x y z
I've been working on a PvP game map that makes heavy use of command blocks and I've noticed that when no players are connected to the server, the server console is spammed with this error:
[timestamp] [Server thread/ERROR]: Couldn't process command java.lang.NullPointerException at java.util.Collections.shuffle(Collections.java:497) ~[?:1.7.0_45] at java.util.Collections.shuffle(Collections.java:469) ~[?:1.7.0_45] at ad.c(SourceFile:127) ~[minecraft_server.1.7.2.jar:?] at ad.a(SourceFile:44) ~[minecraft_server.1.7.2.jar:?] at y.d(SourceFile:114) ~[minecraft_server.1.7.2.jar:?] at bu.b(SourceFile:33) ~[minecraft_server.1.7.2.jar:?] at z.a(SourceFile:58) [minecraft_server.1.7.2.jar:?] at afb.a(SourceFile:79) [minecraft_server.1.7.2.jar:?] at ain.a(SourceFile:49) [minecraft_server.1.7.2.jar:?] at mj.a(SourceFile:405) [minecraft_server.1.7.2.jar:?] at mj.b(SourceFile:134) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.u(SourceFile:503) [minecraft_server.1.7.2.jar:?] at lj.u(SourceFile:265) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.t(SourceFile:441) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.run(SourceFile:358) [minecraft_server.1.7.2.jar:?] at ky.run(SourceFile:617) [minecraft_server.1.7.2.jar:?]As soon as a player connects this stops.
Since the error message mentions processing commands, I first thought that this was some issue with command blocks on a clock, but after stopping all of the clocks the issue still appeared.
World files available if desired.
EDIT: this seems to be caused by a command block on a clock running a command similar to
/tp @r[x,y,z,r] x y z
I've been working on a PvP game map that makes heavy use of command blocks and I've noticed that when no players are connected to the server, the server console is spammed with this error:
[timestamp] [Server thread/ERROR]: Couldn't process command java.lang.NullPointerException at java.util.Collections.shuffle(Collections.java:497) ~[?:1.7.0_45] at java.util.Collections.shuffle(Collections.java:469) ~[?:1.7.0_45] at ad.c(SourceFile:127) ~[minecraft_server.1.7.2.jar:?] at ad.a(SourceFile:44) ~[minecraft_server.1.7.2.jar:?] at y.d(SourceFile:114) ~[minecraft_server.1.7.2.jar:?] at bu.b(SourceFile:33) ~[minecraft_server.1.7.2.jar:?] at z.a(SourceFile:58) [minecraft_server.1.7.2.jar:?] at afb.a(SourceFile:79) [minecraft_server.1.7.2.jar:?] at ain.a(SourceFile:49) [minecraft_server.1.7.2.jar:?] at mj.a(SourceFile:405) [minecraft_server.1.7.2.jar:?] at mj.b(SourceFile:134) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.u(SourceFile:503) [minecraft_server.1.7.2.jar:?] at lj.u(SourceFile:265) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.t(SourceFile:441) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.run(SourceFile:358) [minecraft_server.1.7.2.jar:?] at ky.run(SourceFile:617) [minecraft_server.1.7.2.jar:?]As soon as a player connects this stops.
Since the error message mentions processing commands, I first thought that this was some issue with command blocks on a clock, but after stopping all of the clocks the issue still appeared.World files available if desired.
EDIT: this seems to be caused by a command block on a clock running a command similar to
/tp @r[x,y,z,r] x y zIf a command block on a clock running a command similar to
/tp @r[x,y,z,r] x y zexists in a world on a multiplayer server, when there are no players connected to the server, the server console is spammed with this error:
[timestamp] [Server thread/ERROR]: Couldn't process command java.lang.NullPointerException at java.util.Collections.shuffle(Collections.java:497) ~[?:1.7.0_45] at java.util.Collections.shuffle(Collections.java:469) ~[?:1.7.0_45] at ad.c(SourceFile:127) ~[minecraft_server.1.7.2.jar:?] at ad.a(SourceFile:44) ~[minecraft_server.1.7.2.jar:?] at y.d(SourceFile:114) ~[minecraft_server.1.7.2.jar:?] at bu.b(SourceFile:33) ~[minecraft_server.1.7.2.jar:?] at z.a(SourceFile:58) [minecraft_server.1.7.2.jar:?] at afb.a(SourceFile:79) [minecraft_server.1.7.2.jar:?] at ain.a(SourceFile:49) [minecraft_server.1.7.2.jar:?] at mj.a(SourceFile:405) [minecraft_server.1.7.2.jar:?] at mj.b(SourceFile:134) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.u(SourceFile:503) [minecraft_server.1.7.2.jar:?] at lj.u(SourceFile:265) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.t(SourceFile:441) [minecraft_server.1.7.2.jar:?] at net.minecraft.server.MinecraftServer.run(SourceFile:358) [minecraft_server.1.7.2.jar:?] at ky.run(SourceFile:617) [minecraft_server.1.7.2.jar:?]As soon as a player connects this stops.
edit: simplification
I've come across this bug too. Steps to reproduce:
In creative mode, give yourself a command block (`/give username 137`) and place it. Note that middle clicking to pick the command block will work so long as you keep the command block from /give in your hotbar.
Next, remove the command block from your inventory completely. Middle click the command block you placed to pick the command block. It will appear in your inventory as normal but when you attempt to place it, it will disappear from your inventory and will not be placed. If the hotbar slot containing the command block was not empty before the middle click, this will instead place the previous block and revert to it in your hotbar.
Ah, just tested again, and this seems to only happen in multiplayer.
This seems to be a craftbukkit bug. Doesn't happen with vanilla server, but does with craftbukkit with no loaded plugins.
This does not seem to affect 14w07a, but I did not test previous snapshot versions.