crash after steping off Pressure Plate

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 02.09.15 17:22
Description: Exception ticking world

java.lang.IllegalStateException: TickNextTick list out of synch
	at ll.a(SourceFile:557)
	at ll.d(SourceFile:225)
	at net.minecraft.server.MinecraftServer.D(SourceFile:617)
	at net.minecraft.server.MinecraftServer.C(SourceFile:553)
	at bvd.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:457)
	at java.lang.Thread.run(Unknown Source)


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

-- Head --
Stacktrace:
	at ll.a(SourceFile:557)
	at ll.d(SourceFile:225)

-- Affected level --
Details:
	Level name: TEst
	All players: 1 total; [ln['0H111'/0, l='TEst', x=397,84, y=88,00, z=-40,90]]
	Chunk stats: ServerChunkCache: 1426 Drop: 0
	Level seed: -1345878532405487537
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: 77,00,64,00,-171,00 - World: (77,64,-171), Chunk: (at 13,4,5 in 4,-11; contains blocks 64,0,-176 to 79,255,-161), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Level time: 2274188 game time, 3868822 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 106314 (now: false), thunder time: 92867 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.D(SourceFile:617)
	at net.minecraft.server.MinecraftServer.C(SourceFile:553)
	at bvd.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:457)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 15w36a
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.8.0_31, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 385037120 bytes (367 MB) / 870318080 bytes (830 MB) up to 3817865216 bytes (3641 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4G
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [ln['0H111'/0, l='TEst', x=397,84, y=88,00, z=-40,90]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.