Yes, all VANILLA. No mods. No mods that are often not considered as such. No plugins, no texture packs, pretty standard render settings.
Minecraft client 1.7.4
Connected to Minecraft server 1.7.4 (vanilla)
What I expected to happen was...:
Nothing special would happen, if anything
What actually happened was...:
Minecraft crashed!
Description: Rendering Block Entity
java.lang.NullPointerException: Rendering Block Entity
at afh.a(SourceFile:110)
at afh.h(SourceFile:236)
at bni.a(SourceFile:20)
at bni.a(SourceFile:15)
at bni.a(SourceFile:10)
at bnd.a(SourceFile:100)
at bnd.a(SourceFile:92)
at bmt.a(SourceFile:383)
at bmm.a(SourceFile:994)
at bmm.b(SourceFile:814)
at azi.ah(SourceFile:787)
at azi.f(SourceFile:711)
at net.minecraft.client.main.Main.main(SourceFile:152)Steps to Reproduce:
[In Minecraft 1.7.4 connected to Minecraft Server 1.7.4]
1. Place a command block, set to command setblock ~ ~1 ~ minecraft:mob_spawner 0 replace {EntityId:Zombie,SpawnData:{Equipment:[{id:276,Count:1}]},SpawnPotentials:[{Type:Skeleton,Weight:1,Properties:{Equipment:[{},{},{},{},{id:52}]}}],SpawnCount:2,SpawnRange:3,RequiredPlayerRange:64,Delay:10,MinSpawnDelay:10,MaxSpawnDelay:100,MaxNearbyEntities:2}
2. Run command from it
3. Wait
This may only work with stuff copied from youtube. It seems to add a few bugged characters. First copied from http://www.youtube.com/watch?v=TKqhUGLKRo4 codes the last setblock one in the about section.
I hope I attached the proper crash log.
If you want to try connecting to the server where the issue is happening, its XX.XXX.XXX.XX, just outside the spawn area. Im not going to worry about griefing as I don't have much and its all protected. (Wont work if I manage to fix it using mcedit or something. No, I didn't use it on the map before the bug happened nor anything similar)
I got sick of waiting, download of the world is now provided, and I fixed the issue on my server's world using MCEdit. The world given is not edited.
Also, once its verified Ill fix it server side, I just know you guys most likely want to be able to see it for yourselves.
This is not, in any way, shape, or form, a duplicate of MC-27442. MC-27442 only applies to horse spawners causing crashes; it is not a blanket statement that all spawners are intended to cause crashes.
That being said, I wouldn't consider this a valid report anyhow, because bad data will cause crashes regardless of whether it's YouTube's unicode characters* or a simple typo. The suspect part is "{SOFTHYPHENid:276,Count:1}" (I've replaced an otherwise invisible soft-hyphen with "SOFTHYPHEN") - this essentially means that a piece of equipment on the mob is lacking a proper id tag, which will cause crashes. If the id tag were intact, and some other tag, such as Slot, contained the typo, I doubt it would crash. Remove all soft hyphens and you'll get a proper command.
*(from what I can tell, the issue is soft hyphens, not "bugged characters" - it's for formatting; it's not an MC bug that YouTube does not support preformatted or codeblock tags)
Mod Tails, "java.lang.NullPointerException: Rendering Block Entity" has many causes; MC-27442 is not the only one, and not all causes are intended/invalid (there have been actual bugs in the past which Mojang fixed, which also happened to cause that crash message). Although this ticket happens to be invalid for another reason, not every spawner/potentials bug has something to do with MC-27442 (which, looking at the code behind the bug, is exclusive to horse spawners with SpawnData/SpawnPotentials).