Minecraft Forums

---- Minecraft Crash Report ----
// But it works on my machine.

Time: 19/07/15 2:17 PM
Description: Ticking entity

java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Byte
at pz.a(SourceFile:92)
at um.n(SourceFile:607)
at um.j_(SourceFile:583)
at um.aS(SourceFile:507)
at pk.aj(SourceFile:1330)
at pr.K(SourceFile:182)
at pk.t_(SourceFile:266)
at pr.t_(SourceFile:1265)
at um.t_(SourceFile:520)
at adm.a(SourceFile:1408)
at adm.g(SourceFile:1386)
at adm.i(SourceFile:1279)
at ave.s(SourceFile:1849)
at ave.av(SourceFile:888)
at ave.a(SourceFile:325)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
at pz.a(SourceFile:92)
at um.n(SourceFile:607)
at um.j_(SourceFile:583)
at um.aS(SourceFile:507)
at pk.aj(SourceFile:1330)
at pr.K(SourceFile:182)
at pk.t_(SourceFile:266)
at pr.t_(SourceFile:1265)
at um.t_(SourceFile:520)
at adm.a(SourceFile:1408)
at adm.g(SourceFile:1386)

-- Entity being ticked --
Details:
Entity Type: ArmorStand (um)
Entity ID: 3546267
Entity Name: §e§lWelcome to the Goblin Gold Exchange
Entity's Exact location: 30.56, 83.63, 8.56
Entity's Block location: 30.00,83.00,8.00 - World: (30,83,8), Chunk: (at 14,5,8 in 1,0; contains blocks 16,0,0 to 31,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Entity's Momentum: 0.00, 0.00, 0.00
Entity's Rider: ~~ERROR~~ NullPointerException: null
Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
at adm.i(SourceFile:1279)

-- Affected level --
Details:
Level name: MpServer
All players: 11 total; [bew['SparkZ_PvP'/6857, l='MpServer', x=38.14, y=83.00, z=-2.91], bex['Azwerth'/3525397, l='MpServer', x=30.94, y=84.22, z=-2.34], bex['MikeMos'/3459557, l='MpServer', x=24.00, y=87.00, z=8.00], bex['BrutalScroll'/1465271, l='MpServer', x=24.59, y=83.00, z=22.38], bex['Rift Merchant'/77, l='MpServer', x=44.47, y=83.00, z=25.50], bex['TheWoolKing'/3303539, l='MpServer', x=28.06, y=83.00, z=-10.53], bex['Scorp2128'/3476058, l='MpServer', x=40.81, y=86.50, z=-0.75], bex['ohhyay3'/3526579, l='MpServer', x=38.81, y=83.00, z=-11.41], bex['LukeWal99'/2808597, l='MpServer', x=36.72, y=83.00, z=-3.41], bex['deanvanrooijen'/3541308, l='MpServer', x=60.97, y=76.00, z=28.94], bex['MarvelG9'/3519740, l='MpServer', x=16.36, y=77.18, z=2.94]]
Chunk stats: MultiplayerChunkCache: 49, 49
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: -6550.00,43.00,9210.00 - World: (-6550,43,9210), Chunk: (at 10,2,10 in -410,575; contains blocks -6560,0,9200 to -6545,255,9215), Region: (-13,17; contains chunks -416,544 to -385,575, blocks -6656,0,8704 to -6145,255,9215)
Level time: 153740006 game time, 153750324 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: ~~ERROR~~ ClassCastException: zx cannot be cast to java.lang.String
Retry entities: 0 total; []
Server brand: CompilexSpigot
Server type: Non-integrated multiplayer server
Stacktrace:
at bdb.a(WorldClient.java:401)
at ave.b(SourceFile:2293)
at ave.a(SourceFile:334)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

-- System Details --
Details:
Minecraft Version: 1.8.7
Operating System: Windows 7 (amd64) version 6.1
CPU: 4x Intel(R) Core(TM) i5-2430M CPU @ 2.40GHz
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 140783424 bytes (134 MB) / 341295104 bytes (325 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 70, allocated: 13, tallocated: 95
Launched Version: 1.8.7-OptiFine_HD_U_D6
LWJGL: 2.9.4
OpenGL: Intel(R) HD Graphics 3000 GL version 3.1.0 - Build 9.17.10.4229, Intel
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: Yes
Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Resource Packs: [[1.8.3]_R3D.CRAFT_SR-64x_v0.2.2.zip]
Current Language: English (US)
Profiler Position: N/A (disabled)

Try using Java 7. The latest versions of Java always cause problems.

How do I downgrade to 7?

I tried to and it says java 7 isn't available to the public :(... Anything else that's the problem? I really wanna fix this

http://www.oracle.com/technetwork/java/javase/downloads/jre7-downloads-1880261.html