Unexpected crashes every minute or so... :(

I have joined a polish server, i was fighting with someone, then, i crashed...
later on, i rejoined and i have crashed again... Crashes are repeatable every minute or so... Am i a _*crash*__*magnet*_ ? 😞

Minecraft Crash Report ----
// Who set us up the TNT?

Time: 19.08.15 18:54
Description: Ticking entity

java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Byte
at pz.a(SourceFile:92)
at ph.l(SourceFile:71)
at ph.j_(SourceFile:156)
at ph.m(SourceFile:135)
at tm.m(SourceFile:38)
at tp.m(SourceFile:1003)
at pr.t_(SourceFile:1300)
at ps.t_(SourceFile:211)
at tp.t_(SourceFile:1032)
at adm.a(SourceFile:1408)
at adm.g(SourceFile:1386)
at adm.i(SourceFile:1279)
at ave.s(SourceFile:1850)
at ave.av(SourceFile:889)
at ave.a(SourceFile:325)
at net.minecraft.client.main.Main.main(SourceFile:124)

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

– Head –
Stacktrace:
at pz.a(SourceFile:92)
at ph.l(SourceFile:71)
at ph.j_(SourceFile:156)
at ph.m(SourceFile:135)
at tm.m(SourceFile:38)
at tp.m(SourceFile:1003)
at pr.t_(SourceFile:1300)
at ps.t_(SourceFile:211)
at tp.t_(SourceFile:1032)
at adm.a(SourceFile:1408)
at adm.g(SourceFile:1386)

– Entity being ticked –
Details:
Entity Type: EntityHorse (tp)
Entity ID: 1000039295
Entity Name: Horse
Entity's Exact location: -611,97, 182,59, 689,84
Entity's Block location: -612,00,182,00,689,00 - World: (-612,182,689), Chunk: (at 12,11,1 in -39,43; contains blocks -624,0,688 to -609,255,703), Region: (-2,1; contains chunks -64,32 to -33,63, blocks -1024,0,512 to -513,255,1023)
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: 3 total; [bew['Sniping_Hero'/12736, l='MpServer', x=-610,05, y=127,25, z=688,46], bex['_GG_LolF'/3680109, l='MpServer', x=-614,03, y=125,00, z=692,13], bex['KoxPvPKiller'/3740515, l='MpServer', x=-612,00, y=126,00, z=689,81]]
Chunk stats: MultiplayerChunkCache: 441, 441
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: -105,00,104,00,217,00 - World: (-105,104,217), Chunk: (at 7,6,9 in -7,13; contains blocks -112,0,208 to -97,255,223), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 62633438 game time, 62757881 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: 8 total; [bew['Sniping_Hero'/12736, l='MpServer', x=-610,05, y=127,25, z=688,46], bex['_GG_LolF'/3680109, l='MpServer', x=-614,03, y=125,00, z=692,13], tp['Horse'/1000039295, l='MpServer', x=-611,97, y=182,59, z=689,84], bex['_GG_LolF'/3680109, l='MpServer', x=-614,03, y=125,00, z=692,13], bex['KoxPvPKiller'/3740515, l='MpServer', x=-612,00, y=126,00, z=689,81], bex['KoxPvPKiller'/3740515, l='MpServer', x=-103,52, y=103,00, z=199,04], bex['mariusz60'/3715903, l='MpServer', x=-104,63, y=103,00, z=198,78], bex['KoxPvPKiller'/3740515, l='MpServer', x=-612,00, y=126,00, z=689,81]]
Retry entities: 0 total; []
Server brand: BungeeCord (git:BungeeCord-Bootstrap:1.8-SNAPSHOT:"cc3a8c0":1071) <- Spigot
Server type: Non-integrated multiplayer server
Stacktrace:
at bdb.a(SourceFile:309)
at ave.b(SourceFile:2311)
at ave.a(SourceFile:334)
at net.minecraft.client.main.Main.main(SourceFile:124)

– System Details –
Details:
Minecraft Version: 1.8.8
Operating System: Windows 8.1 (amd64) version 6.3
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 109588704 bytes (104 MB) / 337633280 bytes (321 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: 0, allocated: 13, tallocated: 95
Launched Version: 1.8.8
LWJGL: 2.9.4
OpenGL: Intel(R) HD Graphics GL version 4.0.0 - Build 10.18.10.3345, 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: No
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (UK)
Profiler Position: N/A (disabled)
CPU: 2x Intel(R) Pentium(R) CPU 2020M @ 2.40GHz